Direct answer: What buyers inherit is one staircase and two separate gauges. The staircase runs from cheap chips through sinking wood to 奇楠. The gauges say something else: one reads how much resin a piece carries, the other reads whether the fibre itself has changed. Learn the gauges and the staircase stops misleading you.
Key facts: A “沉水” or “奇楠” tag is a seller’s claim. The bowl answers how much resin is present. The 奇楠 name answers what the resin did to the wood. Two questions, never one ranking; English accounts usually merge them and lose the point.
Key Takeaways
- 沉香 means “sinking fragrance.” The name records an old test, not a compliment.
- Resin load sorts into three bands: 沉水 (sinks), 半沉半浮 (half-sinks), 浮 (floats).
- 奇楠 is a condition, not a promotion: 油包木 (oil around wood) instead of 木包油 (wood around oil).
- Several sources describe top 奇楠 as half-sinking rather than sunk. The bowl is an ordinary-agarwood tool.
- The five-colour 奇楠 scheme is traditional, and two of its tiers are disputed.
- The origin of the word 奇楠 remains unresolved; this page leaves it that way.
- Density can be measured. What buyers really pay for is aroma.
- A grade word is a claim. Authentication is the check behind the claim.
Begin With Two Questions
Direct answer: Any complete description of a piece answers both “how much resin?” and “what state is the fibre in?” A tag that answers one has answered half.
The common misconception is that the staircase ranks everything; it is tidy, and it is wrong. It also collapses the first time you meet a 奇楠 piece that rides high in water, or a heavy piece that smells of nothing much. Those are not anomalies. They are the system showing you that two measurements were being made all along.
| The question | What is measured | How it is read | Words attached |
|---|---|---|---|
| How much resin? | Load inside the fibre | Sink, half-sink, float | 沉水, 半沉半浮, 浮 |
| What state is the wood? | Whether the fibre converted | Softness, pliability, cold scent | 奇楠, kyara |
Everything below unpacks those two rows.
The Bowl: A Fast Sort With a Blind Spot
Direct answer: Resin is heavier than the wood it fills. A piece carrying a lot of it goes down in water; a piece carrying little stays up. The test needs no equipment, which is why the trade adopted it and why it is so easily defeated.
The physical chain, from wound to water:
something opens the bark or the wood → the tree answers with resin at the injury → the deposit fills the gaps between fibres → mass per volume climbs past water’s → the piece goes down.
Run it the other way for the cheap end: little resin, plenty of air → buoyancy survives → the piece floats → it sorts to the bottom of the tray.
| Band | In water | Resin load |
|---|---|---|
| 沉水 | Sits at the bottom | Most resin |
| 半沉半浮 | Hangs mid-water | Middling |
| 浮 | Stays on top | Least (historically 黄熟香) |
The blind spot is simple. The bowl cannot tell how the density got there. Resin, water and injected oil all add weight, and the test reads all three the same way. Hold that thought until the section on fakes.
奇楠: A Second Condition
Direct answer: 奇楠 (qínán; Japanese kyara) is not a higher rank of one material but a second condition of it, and the difference shows in the hand before it shows in the nose. In ordinary 沉香 the resin runs through firm wood — 木包油. In 奇楠 the fibre has taken the resin in — 油包木.
The hand notices before the nose. Ordinary pieces resist a thumbnail, and the dark lines follow the grain. 奇楠 gives under the nail; colour does not stop at a vein, and the whole surface reads oily. The classical account has a blade raising it in shavings and the hand moulding it into a ball (削之成卷、捏之成丸); warmth is not needed to smell it.
That tactile difference is the useful test, because it separates two structures rather than two price tags. Once you have felt it on a piece you trust, the vocabulary stops being decorative.
Now the two scales diverge. Across ordinary 沉香, more resin means more weight, and the bowl earns its keep. Several accounts put the best 奇楠 at half-submerged: soft resin spread evenly through the fibre does not clump as veins do. The finest piece in the room can float while a duller one sinks. The bowl reads concentration; 奇楠 names conversion.
| Band | In water | Structure | What you hold |
|---|---|---|---|
| Medicinal / commodity | Floats | 木包油 | Pale chips, lightly resined; an herb, not a treasure |
| Gradeable | Half-sinks to sinks | 木包油 | Resin-veined wood for warming |
| Dense 沉水 | Sinks | 木包油 | Heavy, resin-packed; the top of the ordinary tier |
| 奇楠 | Often half-sinks | 油包木 | Soft, pliable, cold-fragrant; another state |
The four-band table is my own arrangement, not a classical one. It shows what happens when two dials are crossed: four outcomes instead of a single queue. Notice the asymmetry at the top. The last band is defined by conversion, and a grader with only a bowl will never see it.
Route Names: Where the Resin Came From
Direct answer: Classical naming separates four origins for the resin — 熟结, 生结, 虫漏, 脱落 — and the origin carries reputation even when two pieces measure alike.
- 熟结. Resin from a tree that died and aged, often underground.
- 生结. Resin from a living tree.
- 虫漏. Resin laid down around insect boring.
- 脱落. Resin from an external wound or a break.
These describe circumstances, not ranks. A piece’s route can raise its price without changing its density, which is why the names are worth knowing and worth distrusting as grades.
| Route | Circumstance | Density | 奇楠 possible? |
|---|---|---|---|
| 熟结 | Dead, aged, often buried tree | Light to dense | Yes |
| 生结 | Living tree | Usually firmer, lighter | Rarely |
| 虫漏 | Insect boring | Variable | Sometimes |
| 脱落 | External wound | Variable | Rarely |
A seller who uses a route name as though it were a grade is borrowing prestige from one axis to price the other.
Colour Names and Their Quarrels
Direct answer: 奇楠 carries five traditional colour names — white, green, purple, yellow, black. The names move money. They do not move scholars into agreement: purple and yellow may be grades, or stages green passes through.
| Colour | Name | Standing | Doubt |
|---|---|---|---|
| 白 | 白奇楠 | Highest | Rarest, most argued over |
| 绿 | 绿奇楠 / 莺歌绿 | Usually treated as top tier | The common benchmark |
| 紫 | 紫奇楠 / 兰花结 | Disputed | Grade, or aged green? |
| 黄 | 黄奇楠 / 金丝结 | Disputed | Grade, or a colour stage? |
| 黑 | 黑奇楠 / 铁结 | Lower | The plainest of the colours |
Two cautions. Colour terms are shop vocabulary, describing a sort rather than a standard; one word may cover pieces that act unlike each other on the plate. The quarrel is not academic either — if purple and yellow are stages rather than separate tiers, then pricing them apart inflates two shelves of the market.
Before a colour justifies a figure, ask what it is meant to indicate: resin condition, age, origin, or simply a name. The top grade has its own treatment at 奇楠 (qinan / kyara).
What a Piece Costs, and Why the Number Is a Warning
Direct answer: The gap between commodity chips and top 奇楠 is measured in thousands of times. That gap is the reason mislabelling is worth the trouble. Read every figure here as a scale marker, not a quote.
| Tier | Rough signal (RMB per gram, market-dependent) |
|---|---|
| Ordinary medicinal chips (中药铺 grade) | about 0.4–1.4 |
| Burnable, gradeable agarwood (可品沉香) | tens to thousands, tracking resin load |
| 沉水 pieces | a steep premium over floating pieces of similar size |
| 奇楠 | roughly 3,000–8,000; top white 奇楠 can pass 16,000 |
| Indian “old mountain” sandalwood (老山檀) | about 10–150, by age and density |
| Plantation sandalwood (Australian, Indonesian) | well under 3 |
The last two rows keep the shelf in perspective. Agarwood is not the only costly wood in the shop, and “expensive” is not a synonym for it.
One correction is worth carrying out of this section. Left unqualified, the saying that agarwood is worth more than gold (沉香贵过黄金) does not hold. A medicinal chip costs a few yuan. Gold-scale prices belong to dense 沉水 pieces and, above all, to 奇楠. When the top-tier story is applied to an ordinary piece, the claim has described the seller rather than the wood.
Figures shift with origin, grade and fashion, and plenty of what is offered is mislabelled. Testing is covered in the authentication database.
Wild or Planted: A Different Axis
Direct answer: Resin tells you how much and what state. It does not tell you whether the tree grew in a forest or a plantation, and that distinction moves price more than it moves grade.
Wild material forms on its own schedule. A tree can stand for decades before a wound produces resin, and many never produce any at all. Plantations shorten the wait by wounding or inoculating trees deliberately, then harvesting after a few years. What comes out is real Aquilaria carrying resin, judged on the same pair of scales.
Buyers still pay differently for wild pieces: part aroma reputation, part scarcity. The practical rule is that “wild” is a provenance claim, not a third dial. A planted piece can sink; a wild piece can be light. When wildness is presented as a grade, ask for the paperwork a provenance claim needs.
The Three Ways a Fake Wins
Direct answer: A counterfeit is built to satisfy a test, so the more authoritative a test looks, the more attention it attracts. A grade word and a verification procedure are not the same instrument.
Three methods, one per sense:
weight first. Oil is boiled into the wood or forced in under pressure → mass rises → the piece drops in water → the bowl approves.
then the eye. Dye is soaked in to darken pale fibre → the surface begins to look resin-saturated → the photograph passes.
then the nose. Fragrance is applied → the cold sniff clears → a buyer who never warms the piece never finds out.
The sequence maps onto buying habits. Most purchases are settled on appearance and a cold sniff, the two cheapest signals to fake. Warmth is expensive to counterfeit, which is why the warm test is the one worth insisting on. The substitution cross-reference traces the same pattern across other materials.
Turning a Tag Into Questions
Direct answer: A grade label should generate checks. A word that cannot be checked is decoration.
| The tag says | Ask | Why |
|---|---|---|
| “Sinking” | Tested how, by whom, dry or wet? | Injected oil also sinks |
| “奇楠” | Soft, pliable, cold-fragrant — or just priced like it? | The traits survive only in whole pieces |
| A named origin | Which district, and what does it predict? | Specific beats “premium” |
| A route name | 熟结, 生结, 虫漏, 脱落? | Reputation, not measurement |
| A price | Does it fit the claimed tier? | A 奇楠 tag at commodity prices contradicts itself |
The last row catches more bad lots than any other question. Price and grade must tell one story. When they disagree, one of them is wrong, and it is rarely the price.
Walking Through a Piece
Direct answer: Work from the cheap, objective checks to the decisive sensory one, and let neither finish the judgment alone.
- Bowl first, dry. Sink, half-sink or float? Write it down with the caveat: this is a concentration reading.
- Look at the resin. Veins through firm wood, or saturation through soft fibre?
- Feel a corner. Resistance says wood-around-oil; give says oil-around-wood.
- Warm a sliver. Judge opening, body and tail separately. Aroma is the tiebreaker and cannot be hurried.
- Ask route and origin, then check the price. Everything should point the same way.
The order keeps the cheap tests in front and the decisive one last. It also shows where fakes must succeed: at the bowl, at the surface, or at the price.
Words From Other Traditions
Direct answer: Chinese, Japanese and Vietnamese practice sort the same material with different vocabularies. Seeing the overlap makes foreign catalogues easier to read.
| Tradition | Framework | What it sorts |
|---|---|---|
| Chinese | 沉水 bands plus 奇楠 colours | Resin load and structural state |
| Japanese | rikkoku gomi (六国五味) | Six “countries,” five “tastes” — a classical descriptive scheme |
| Vietnamese | Regional grades, e.g. Nha Trang | Origin and aroma reputation |
Those Japanese “countries” are labels from tradition, not mapped geography. Vietnamese regional names work the same way: a reputation attached to a place, not a certificate issued by it. Neither is modern provenance documentation. For the Japanese framework in context, see kōdō.
The Name 奇楠
Direct answer: The origin of 奇楠 is disputed, and this page does not choose.
The candidates:
- Sanskrit Kāla (काल), “black” or “time.”
- Sanskrit tagara, a fragrant plant, shortened into 伽罗 / 伽楠.
- A reading from 伽蓝, a monastery.
Closer reading of the Sanskrit has challenged the tagara link, proposing agaru / aguru as the older name. The honest position remains uncertainty, with several competing theories. The Japanese kyara (伽罗) descends from the same word and carries the same doubt.
The doubt is worth sitting with, because it sets the tone for the rest of this page. A vocabulary this contested grew out of commerce and custom rather than a standards body. Its words carry money without carrying definitions.
Heat: Three Waves
Direct answer: Agarwood is judged on warmth in three movements — 头香 (head), 本香 (body), 尾香 (tail) — and the sequence counts as much as any single note.
On gentle heat:
the opening arrives → brief and bright, gone quickly → the middle thickens → this is the piece’s own character, and it lasts → the closing note emerges as the plate cools → that last impression is what lingers.
A piece that opens strongly and fades at the tail is unfinished. One whose three movements are all present is the real article. One sniff cannot grade a piece, because the material unfolds; judging only the opening is judging a preface.
What the Cut Face Shows
Direct answer: A fresh cut is the most informative surface on a piece. It exposes how the resin is distributed rather than what the finish looks like.
Read three things. Look at the pattern: streaks of dark resin in pale wood mean ordinary 木包油, while a surface that is dark and oily all through, with no clear edge between grain and deposit, suggests 油包木. Depth: dye sits on the surface, so colour that stops at the skin is a warning, while colour that continues inward is at least consistent with real resin. Texture: hard, splintery fibre and soft, waxy fibre are different materials, and a cut edge is where the difference is easiest to feel.
The cut also settles what photographs cannot. Veins look dramatic in a picture and can be a thin surface effect in the hand. A seller who refuses a cut face, or shows only the polished side, is controlling the one view that would answer the question.
| At the cut | Ordinary 沉香 | 奇楠 |
|---|---|---|
| Pattern | Streaks in hard wood | Saturation throughout |
| Colour depth | Follows the veins | Runs through the fibre |
| Texture | Hard, splintering | Soft, waxy |
| Fingernail | Pushes back | Sinks in |
Dry Before You Test
Direct answer: A piece straight from a saw, a rinse or a damp room can pass the bowl for the wrong reason. Dry it first, or the test measures water instead of resin.
Fresh wood holds water in its pores, and so does a piece wiped for display or stored in humid air. Water displaces air, average density rises, and a mediocre piece passes a test it would fail a week later. In practice the instruction is dull and it matters: leave the piece at room temperature, out of sun, then test.
The same trap appears at a counter. A wet piece dropped straight into a bowl is not necessarily a trick; the conditions simply favour it. Ask for a dried piece and a second test, then watch whether the answer holds.
Weight in the hand is a weaker cousin of the same signal. A dense piece feels heavy for its size, and experienced buyers use that as a first filter. It cannot separate resin from water and cannot see inside. Use it to decide what deserves a bowl, never to replace one.
Burn or Warm
Direct answer: High-grade agarwood is warmed, not burned. Fire destroys the sequence of notes that makes the material worth grading, and it adds smoke the nose then has to see past.
A sliver on a warm plate releases head, body and tail in order. The same sliver on a coal gives a burst, a lot of smoke and a charred note that flattens the comparison. The difference is not snobbery; combustion breaks molecules that gentle heat would have released intact.
There is a practical cost too. A piece large enough to survive a coal is a piece large enough to be worth keeping. Burning the best material to test it spends the sample on the least useful information.
Smoke is the other reason to prefer a warmer. Any smouldering material produces particulate matter, and a small closed room concentrates it quickly. Ventilation belongs to the method, not to the afterthought. If a session irritates eyes or throat, stop and air the room.
Bags and Averages
Direct answer: A grade on a bag is an average, and an average can hide a good top layer over a poor base. One piece never grades a lot.
Hands do the sorting, and hands vary. A bag can hold a few fine pieces on top, ordinary material below and dust at the bottom. The word on the bag describes the sort, not every piece inside it.
A workable sampling habit:
- Take from the top, the middle and the bottom. Do not let the seller pick the sample.
- Test more than one piece. Two pieces that behave alike say more than one perfect piece.
- Keep a labelled reference. It is the only way to compare a later delivery with the first.
- Judge the spread. A lot whose pieces vary wildly will disappoint on average.
The rule has a corollary for sellers: a buyer who wants to choose the sample is not being difficult. That buyer is doing the one test a bag label cannot do.
Matching the Grade to the Purpose
Direct answer: Different buyers need different answers, and the commonest overpay is a label that answers a question nobody asked.
| Purpose | Signal that matters | Signal that misleads |
|---|---|---|
| Aroma on gentle heat | The three-wave warm read | The bowl alone |
| Resin load for blending | 沉水 band plus visible oil | A colour name |
| The 奇楠 experience | Softness, pliability, cold scent | The sink test |
| Provenance / collection | Documented origin and route | “Premium agarwood” |
| Ritual or display | Whole, well-formed pieces | A powder grade |
A buyer chasing aroma who fixes on the bowl is reading the wrong dial. A buyer chasing 奇楠 who fixes on a colour is reading a label instead of a piece. Match the signal to the purpose and most of the overpay disappears.
Storage and Slow Change
Direct answer: Agarwood is stable next to a resin, but it is not inert. Humidity, light and neighbouring smells all leave marks, slowly enough that you notice only after they matter.
The hazards are mundane. Damp encourages surface mould and leaves a musty note that heat will amplify. Strong smells nearby are absorbed, so a piece stored beside camphor or spices takes on the neighbour. Direct sun fades the surface and warms it unevenly, inviting cracks along the grain.
A sealed container, a stable room and separation from anything scented cover most of it. Do not refrigerate: condensation is worse than the warmth you were avoiding. Check stored pieces now and then rather than leaving them for a year, because a problem caught early is a surface problem.
From Forest to Bench
Direct answer: Grading starts long before a bowl appears. Material is collected, cleaned, trimmed and sorted in stages, and each stage removes information as well as dirt.
The rough sequence, as people who handle the material describe it:
wood is collected or cut → the resin-bearing sections are separated from pale fibre → dirt and rot are trimmed away → pieces are sorted by size and by how they behave in water → the sorted lots are packed and labelled → the labels travel further than the reasons behind them.
Two things follow. A grade word is a summary of a sorting decision made by someone whose criteria you did not see. Trimming is an edit: a piece cut down to its best section is not lying, but it is no longer a sample of the whole.
Knowing the sequence changes the questions: instead of “is it 沉水?” one asks “what was cut away before weighing?” The second question is harder and tells you more.
Heating Equipment and the Read
Direct answer: The same piece reads differently on charcoal, on an electric warmer and under a mica plate. The equipment is part of the measurement.
Charcoal delivers high, uneven heat. It is traditional, cheap and difficult to control; a coal that is too hot chars the surface and produces the bitterness that gets blamed on the material. Ash bedding helps, and a mica plate helps more, because it spreads the heat and keeps resin off the coal.
An electric warmer gives you a dial. A dial looks like a luxury and behaves like a different instrument: raising heat gradually lets the three stages arrive in order, which no blazing coal permits.
A mica plate over a coal is the compromise most traditional practice settles on. It separates the resin from direct contact, evens the surface temperature and lets a session run longer. Clean the plate between sessions: resin leaves a film that reheats into a stale note, and a plate used for one material will flavour the next. A scrape while warm and a dry wipe are enough; water on a hot plate is not.
None of these is more authentic than the others. They are different instruments, and a comparison across pieces is only fair when the instrument is held constant.
The Words Used on a Warm Piece
Direct answer: Descriptions of warmed agarwood cluster around a small set of impressions — sweet, balsamic, woody, floral, milky, slightly spicy — and the words are directional rather than precise.
Sweetness is the most common positive term and the least specific. It can mean a honeyed quality, a creamy one, or the soft sweetness of dried fruit, and two buyers using the word may be describing different things. Balsamic means resinous warmth; woody means the raw timber beneath it; floral and milky describe lighter, rounder notes that show up first.
The useful discipline is to separate the note from the moment. A floral impression in the first thirty seconds means something different from the same word applied to the tail. Pairing each word with the moment it occurred turns poetry into data; no other habit improves a set of notes as much. Compare vocabulary across sellers rather than within one. A vendor who calls everything sweet is not lying; the word has become a house habit and distinguishes nothing. Two vendors using different words for the same impression are easier to read than one vendor using one word for everything.
Regional Names, Held Lightly
Direct answer: Place names in agarwood — Hainan, Nha Trang and others — carry aroma reputations and no built-in verification. Read them as expectations, not certificates.
A regional name predicts a style: a particular sweetness, a particular resin character, a particular way of behaving on the plate. It does not tell you that the piece in front of you came from there, and it certainly does not tell you that the piece is good.
The same region produces fine pieces and dull ones. A Hainan label on a flat piece is a flat piece with a Hainan label. A place name narrows expectation, which helps, and it cannot replace the warm test, which settles the matter.
Regional reputations also drift. Demand redraws supply, names drift onto wood from elsewhere, and a word that once meant a forest ends up meaning a price. Treat the name as a hypothesis to test against the piece, not a fact to be confirmed by the seller.
Photographing a Piece for Someone Else
Direct answer: Most agarwood changes hands at a distance, and a photograph can make an ordinary piece look like a specimen. Control the light, show the cut, and put a scale in the frame.
Diffuse daylight, no flash. Flash flattens texture and exaggerates dark veins, the opposite of what a buyer needs to see. A window on an overcast day beats any lamp.
Three views, minimum. Face, cut edge and back. Defects live on the side nobody photographs, and a seller who supplies only the best angle has answered a different question.
A scale reference. Size is the most misread dimension in remote buying. A ruler or a coin in the frame removes the guesswork; without one, a piece photographed close reads larger than it is.
A short video on heat. Thirty seconds of a sliver warming says more than a gallery of stills. Watch for smoke, for how the surface softens, and for whether the seller keeps the piece far from the heat.
Declare treatments in the same breath as the photographs. Oiled, dyed, waxed or merely cleaned — each changes what the buyer is looking at, and none of them is a secret worth keeping.
A Notebook for Comparing Pieces
Direct answer: Scent memory is short and easily led by expectation. A written record is the only comparison that survives a few months.
A page per piece, with the same fields every time:
- date, seller, asking price
- claimed species, origin and route
- form and weight
- bowl result, and whether the piece was dry
- cut pattern and texture
- cold scent
- warm read: head, body, tail
- decision, and the reason for it
The reason for the last field is that decisions decay faster than impressions. Six months later, the note explains why a piece was rejected, which is usually more useful than a memory of liking it.
The notebook also exposes a habit worth correcting. Buyers tend to record the pieces they bought and forget the ones they refused, which removes the only control group they had.
Two columns earn their space over time: what you expected and what you found. Expectation is the variable that shifts most between a photograph, a description and a piece in the hand, and writing both down shows how far a seller’s language travelled from the material. After a dozen entries the pattern is usually about the seller rather than the wood.
Cutting, Cleaning and Disclosure
Direct answer: Preparation alters a piece, and honest preparation is declared. Cleaning removes dirt; oiling, waxing and dyeing change the signals a grader relies on.
Trimming dead fibre is normal and usually harmless. Washing is normal too, with one consequence: a wet piece weighs more, and the bowl will flatter it until it dries.
The treatments that matter are the ones that imitate grade. Oil darkens the surface and gives a dry piece the sheen of a resin-rich one. Wax fills pores and changes the feel under a fingernail, which is precisely the test a buyer uses for 奇楠. Dye pushes colour past what the fibre itself carries.
None of them is fraud by definition. A waxed piece may be a perfectly legitimate object. The problem is silence: a treatment that is not disclosed turns a description into a misdescription, and the buyer has no way to discount for it. Ask what was done to the piece, then judge the answer against the surface.
Offcuts and the Limits of a Piece Test
Direct answer: The bowl was designed for pieces, not for dust. Powder and slivers are graded by different questions, and some of them cannot be answered at all.
Powder cannot be sink-tested in any meaningful way. It is judged on aroma, on how much oil it releases, and on what else is in it. That makes powder the easiest place to hide a poor input, and the reason pre-ground material deserves more suspicion than a whole piece.
Thin slivers have their own problem. Surface tension can hold a small flat chip at the top of a bowl even when its density would sink it, so a negative result on a sliver proves little. Test a piece of reasonable size, or accept that the reading is unreliable.
Offcuts are not waste. They are the natural material for blending, for practice sessions and for learning a seller’s style at lower cost. What they cannot do is certify the grade of the piece they were cut from.
A small reference shelf helps more than any single purchase. Keep three or four pieces whose behaviour you have already established — one plainly ordinary, one dense, one soft and cold-fragrant if you can find it. They become the yardstick for every later comparison, and they cost far less than the mistakes they prevent. Label them, store them apart from the stock, and re-check them occasionally, because a reference that has drifted is worse than none.
When to Walk Away
Direct answer: Some signals end a negotiation whatever the price. They are mostly refusals rather than claims.
- The seller will not show a cut face, or will not allow a warm test.
- A piece is tested wet and the result is presented as conclusive.
- The price sits far below the tier being claimed.
- A colour or origin story changes when questioned.
- No species, no origin and no route appear anywhere on the label.
- The sale depends on urgency rather than on the piece.
None of these proves a fake. Each one removes the information a buyer needs, and a purchase made without that information is a bet rather than a judgment. Walking away costs nothing; the piece that got away is cheaper than the one that turns out wrong.
Beads, Carvings and the Material That Is Not Burned
Direct answer: A large share of agarwood never reaches a heater. It becomes beads, pendants and carvings, and that market grades pieces by different priorities — figure, colour and workmanship, with scent as a bonus.
For a carver, the constraints are shape and soundness. A piece must be thick enough to hold a form, free of rot and cracks, and stable enough not to split as it dries. Resin-rich material is harder and denser, which makes it slower to work and less forgiving of a mistake.
For a bead maker, the constraint is uniformity. A strand needs pieces of similar colour and density, which means a lot of material is cut away to produce a matched set. The waste is part of the price, and it is why bead-grade material can cost more than a piece of the same weight destined for the burner.
Scent still matters, but differently. A bead is worn against the skin, so it releases scent slowly and at body temperature rather than on a hot plate. A carving sits in a room and releases almost nothing unless it is warmed. Buyers who judge these objects by the standards of a burning session are applying the wrong test.
The vocabulary overlaps, which causes trouble. 沉水 beads exist and are priced accordingly; 奇楠 beads are rare and heavily contested. The physical checks are the same — cut, feel, warmth — but the purpose is different, and the purpose should decide how much weight each check carries.
Certificates and What They Can Say
Direct answer: A certificate is evidence about a sample, not a guarantee about a piece, and the difference matters most at the top of the market.
Three kinds of document appear in this trade. A permit establishes that material may be traded legally — for wild Santalum album, for instance, CITES paperwork serves that function. A laboratory report describes a sample: species identification, perhaps chemistry. A seller’s certificate describes the seller’s own grading.
Each answers a different question. The permit says nothing about quality. The lab report says nothing about the rest of the bag. The seller’s certificate says what the seller believes, which may be honest and is not independent.
The practical use of paperwork is to narrow uncertainty, not to close it. A species report on a sample helps if you know the sample came from the lot you are buying. A permit helps if the species and origin on it match the material. A grade certificate is useful mainly as a record of what was promised, which is exactly what a dispute needs.
Photographs belong with the paperwork. A document naming a weight, a species and a date is only checkable against a picture of the piece it describes; without that, the file proves something was certified, not that this piece was. The same discipline applies to a seller’s own grade note — date, lot number and photograph — which turns a claim into a record.
Keep the documents with the piece. A certificate that cannot be tied to a specific lot is a souvenir.
Where This Guide Stops
Direct answer: This page explains how the grading vocabulary works and where its evidence runs out. It does not identify a piece, value one, or certify an origin.
Three limits are worth stating plainly. The first is sensory: words such as sweet, balsamic or creamy are directional and personal, and two experienced buyers can disagree without either being wrong. The second is documentary: regional names, wild claims and colour tiers are reputations unless records tie a specific lot to a specific claim. The third is analytical: no photograph, and no single test, establishes what a piece is. The bowl measures density, the fingernail measures structure, heat measures aroma, and each answers one question.
What the page can do is make a seller’s claims checkable. A tag that survives the questions above is worth more than one that does not, and a seller who welcomes the warm test has told you something before the material speaks.
Caring for a Worn or Carved Piece
Direct answer: A piece kept for wear or display ages differently from one kept for the heater, and most of the care is about limiting change rather than restoring it.
A worn bead darkens where skin touches it, and the uniform polish of a new strand gives way to a duller sheen. That is normal, not a defect. Cleaning is a soft cloth and patience — not water, and not solvent, both of which can move oils around and leave a patchy surface.
Store strands away from heat and strong smells. A carved piece is an oiled wood and wants what oiled wood wants: stable humidity, no direct sun, and separation from anything scented. Cracks come from rapid change, so a piece moved from a humid room to a dry heated one is more at risk than a piece that simply sits.
Four Habits From the Bench
Direct answer: Four small habits catch more bad lots than any single test does.
Ask what a word is doing. A label that names a district is doing geography; one that names a colour is doing taxonomy; one that names a weight is doing arithmetic. None of them is doing chemistry, and chemistry is what decides whether a block is worth the money.
A quiet test: put the block in a drawer for a month, then smell it without warming. Material that has nothing to say cold will usually have something to say on a plate, and material that shouts cold is often hiding a treatment. Drawers are underrated instruments.
Keep the receipt and the photograph together. If a claim later fails, the pair is the only record that survives the conversation; if it holds, the pair is the beginning of a reference file that will outlast three vendors.
Compare two blocks only after both have rested in one room for a day. Temperature and humidity move through wood slowly; a block from a hot car is not the same object tomorrow.
Four Judgments Worth Keeping
Direct answer: Density is a measurement, quality is a judgment, and rarity is neither. Blur them and you buy a reading instead of a piece.
The bowl is the most objective signal on any tag: the piece sinks or it does not. That objectivity is exactly why counterfeiters build for it. A test nobody can argue with is a test worth engineering around. My position is that the bowl is a good first filter and a poor last word; for 奇楠 it is the wrong instrument entirely, which does not mean the bowl is useless elsewhere.
Rarity is the second confusion. Scarcity lifts price; it does not lift quality. Dull pieces exist among the scarce, and excellent ones among the common; treating scarcity as a grade means bidding for a narrative.
The third is about colour. A colour name is a claim about condition or age, and the sources themselves disagree over what two of the five names mean. Pricing from a colour without asking what it denotes is pricing from a rumour.
The fourth is about provenance. “Wild,” “Hainan,” “Nha Trang” and “old tree” are reputations attached to places and practices. They narrow expectation, but not proof; the line between a reputation and a certificate is exactly where the evidence stops.
One further limit belongs here: grades travel better than pieces. A word can be repeated in a listing, a message or a stall long after the material it described has been sold, and repetition makes it sound established. The piece in front of you is the only thing that has not been repeated.
Editorial judgments, not verified facts.
FAQ
Q: What actually separates the two?
In the first, resin threads through solid wood; in the second, resin has taken the fibre over, leaving something pliable that smells without heat. The first is sorted by resin load; the second is a different condition of the same material.
Q: Is a sinking piece always the better one?
No. The bowl reports resin load. A heavy piece can be dull on the heater, and several sources describe top 奇楠 as half-sinking. Density sorts the ordinary tier and misleads at the top.
Q: How settled is the five-colour scheme?
It is traditional, not settled. White and green occupy the leading positions in most accounts; purple and yellow attract argument, and some writers treat them as green at later stages. A colour is a claim that has to be explained.
Q: What does the word 奇楠 actually derive from?
The question is open. Proposed roots include Sanskrit Kāla (“black” or “time”), Sanskrit tagara (a fragrant plant, shortened to 伽罗), and a temple reading from 伽蓝. The tagara theory has been challenged as a mistranslation of agaru. No single answer is established.
Q: Does cultivated wood ever become 奇楠?
Cultivated pieces are graded on the same two scales, so the question is physical. What differs is aroma reputation and price. “Wild” and “planted” describe provenance, not a third scale, and neither word proves quality by itself.
Sources
- 周嘉胄《香乘》(Ming) — the 沉水 bands and 奇楠 grades. Text.
- 《本草纲目》 — materia medica; its 沉香 and 奇楠 passages are historical, not clinical. Text.
- Flora of China — Aquilaria.
- Naef, R. — volatiles of agarwood. DOI.
- Specialist and consumer writing on 奇楠, where the five-colour dispute is visible.
- Notes: agarwood-chenxiang-notes.md (R-001).
Related Resources
- Agarwood Incense Guide — scent and use.
- Agarwood Powder vs Chips — form and burn.
- 奇楠 (Qinan / Kyara) — the top condition.
- Incense Authentication Database — tests and tells.
- Incense Substitution Cross-Reference — label versus material.
- The Blending System (合香) — agarwood in formulas.
- Japanese Incense Kōdō — rikkoku gomi.
Summary
Grading is two readings, not one. The bowl reports how much resin a piece carries; the 奇楠 distinction reports what the resin did to the wood. The first is objective, gameable and reliable only in the ordinary tier. The second is tactile, disputed at its edges and decisive at the top. Price sits downstream of both, and counterfeiters attack whichever signal the buyer trusts most. What remains is procedure, not inspiration: dry it, weigh it in the bowl, inspect the cut, warm a sliver, question the route and the origin, and see whether the number matches the story. None of those steps certifies anything. Together they make a claim testable, which is as much as a grader can honestly offer.