Last updated: 2026-05-27 | Author: Master Chen Bao, Head Distiller, SilkwayOud | 22 years working with Maoming agarwood
Quick answer: Top sinking-grade Maoming oud sells for $300 to $800 per gram because resin forms in roughly 1 of every 10 Aquilaria trees, takes 15 to 25 years to mature, and yields about 12 ml of pure oil from 70 kg of harvested heartwood. CITES regulation, hand-grading, and the fact that roughly 90% of oud sold under $30/g online is partly or fully synthetic all push verified prices higher.
The first time we weighed a sinking-grade Maoming nugget against a gold bar of the same size, the oud won. That is not a metaphor. It is a literal price comparison from a Shenzhen auction last spring. The room stayed quiet. People who collect oud do not gasp at numbers, they nod.
What looks like an absurd markup from outside, when you do the math, looks more like a yield problem.
1. The 1-in-10 tree problem
Aquilaria trees do not produce agarwood on demand. The resin forms only when the tree is wounded, infected, or stressed for years. Even in a managed Maoming plantation, only about one in ten trees yields commercially viable resin. The other nine become firewood or get replanted.
2. Resin takes 20 years, not 20 weeks
In our Diancheng plantation, a tree wounded in year 8 produces nothing useful until year 18. Some collectors wait 25 years for sinking-grade. Compare that to oak for whisky barrels (6 years) or rose for attar (12 weeks).
3. The yield math
From 70 kg of resin-rich heartwood, a 4-week hydro-distillation produces about 12 ml of pure oil. That is roughly 0.017% yield. For comparison, lavender essential oil yields 1.5%, almost 90 times more per kilo of plant matter.
4. CITES and the grey market
Since 1995, all Aquilaria species sit under CITES Appendix II. Every legal kilo crossing a border needs paperwork that takes weeks to issue. Grey-market oud avoids this, but it cannot be resold, insured, or re-exported. The real market for verified oud is small and tightly regulated. Small supply, slow paperwork, equals premium price.
If you want to understand why verified Maoming oud carries the price tag it does, read our guide to CITES certification and the 40-year Maoming cultivation story.
5. The grading multiplier
| Grade | Density g/cm3 | Resin % | Price per gram (USD) |
|---|---|---|---|
| Floating | <0.85 | 5-15% | $3-12 |
| Standard A | 0.85-0.95 | 15-30% | $15-60 |
| Double super | 1.00-1.05 | 40-55% | $120-300 |
| Sinking grade | >1.05 | 55-70% | $300-800 |
A sinking-grade piece is not "a bit more" than a floating piece. It is 40 to 200 times more, and the price reflects that. Our Maoming Sinking-Grade Oud Nuggets sit at the top of this scale.
6. Why cheap oud is almost always fake
Below $20 per gram, almost no legitimate oud exists. The supply chain math does not work. What you are buying is one of three things: lab-synthesized oud molecules like Iso E Super and Tonalide blended with a carrier, cedarwood or sandalwood with a few drops of real distillate, or wild claims with no paperwork. Industry estimates suggest roughly 90% of oud sold under $30/g online is partly or fully synthetic.
Frequently asked questions
Why is sinking-grade oud more expensive than floating-grade?
Sinking-grade carries 55 to 70% resin and a density above 1.05 g/cm3, which only forms after 20+ years of natural wounding. Floating-grade has 5 to 15% resin and forms in 3 to 8 years.
Is real oud always more expensive than gold?
Per gram, yes for sinking-grade. Gold trades around $80/gram in 2026. Sinking Maoming retails $300-800/gram. Standard-grade oud is more comparable to silver.
Does oud appreciate in value?
Yes. Properly stored oud oil has historically gained 4-8% per year in the secondary collector market, similar to fine whisky or sealed wine.
Why is cheap oud always synthetic?
A legitimate kilogram of mid-grade Maoming costs the distillery $8,000 to produce before margins. Anything sold for $1/gram has to be a synthetic blend.
The honest summary
The price of oud is honest. It reflects 25 years of waiting, a 1-in-10 success rate, a 0.017% yield, and a paperwork system designed to protect the species. When you spend $499 on a 5ml bottle of Celestial Maoming, you are buying about 200 hours of distillery time and roughly 30 kilos of harvested heartwood. The price is the math.
Related reading: Chinese Oud vs Indian Oud | A Beginner's Guide to Pure Oud Oils | Oud Grading Explained