Walk into a shop and two pieces both labeled ebony can differ tenfold in price. The gap does not come from the seller's markup but from the grade of the timber itself. There is no single mandatory international standard for grading ebony, yet mature markets have long converged on a consistent set of criteria. Understanding them tells you where the price difference comes from, and makes you far less likely to buy a dyed imitation.
Why Ebony Has Grades at All
It comes down to heartwood. Ebony's black exists only in the heartwood at the center of the trunk; the surrounding sapwood is pale, pinkish when freshly sawn and turning light reddish or yellowish brown as it dries. Heartwood accumulates slowly. A tree of thirty to fifty years usually yields only light brown wood with darker streaks; forming a large body of pure black heartwood often takes more than a century.
In other words, an ebony grade essentially reflects **the age of the tree and how much usable heartwood it holds**. No amount of craftsmanship can compensate for this, and it is the underlying logic of the price.
Three Factors Behind the Grade
- ◆Heartwood purity: whether the black is even and deep, or interrupted by brown and lighter streaks. Pure black with no figure is the rarest.
- ◆Heartwood ratio: whether the piece is cut entirely from heartwood or includes pale sapwood. Pieces carrying sapwood are markedly weaker in density, oil content, and stability.
- ◆Density and oil: fine ebony heartwood typically exceeds 1.0 g/cm³ and sinks in water; oil-rich timber needs no lacquer, developing a warm natural luster from polishing alone.
The Four Grades You'll Meet in the Market
- ◆Pure black heartwood: jet black with almost no figure, cut from the core of a fully mature tree. The scarcest and most expensive, reserved for the finest carving and critical instrument parts.
- ◆Dark brown to near black: reads as black overall, with slight variation on close inspection. The most common material for high-end work.
- ◆Distinctly streaked (striped ebony): clear alternating light and dark bands, common in certain Indonesian and African species, mid-range in price.
- ◆Mixed with sapwood: visibly includes pale sapwood, lower in density and stability. Entry level.
Are Streaks Always Worse?
Not necessarily. Streaked wood ranks lower only in terms of the scarcity of pure black heartwood, but striped ebony is an aesthetic category in its own right, and that flowing figure is sometimes preferred for particular objects and instruments. What you should actually avoid is not the figure but **timber carrying large amounts of sapwood, lacking density, or disguised with dye**.
Put differently, the grade sets the floor on the material's value; it is not a verdict on the quality of the work.
Four Checks Before You Buy
- ◆Weight and water: true ebony heartwood feels heavy for its size, and a small piece should sink immediately. Dyed secondary woods usually float.
- ◆Scratch on white paper: press a discreet edge across white paper. Real ebony leaves a faint brown trace; dyed wood leaves almost nothing, or sheds black particles.
- ◆Alcohol wipe: rub an inconspicuous spot with an alcohol pad. If the pad blackens at once and lifts heavy pigment, the piece has been dyed.
- ◆Scent and finish: ebony has a very faint, purely woody smell. Sharp or perfumed odors deserve caution. Real material is usually finished by polishing rather than thick gloss lacquer, which can be used to hide the wood beneath.
An honest caveat: these checks only rule out obvious fakes and cannot serve as identification on their own. Other dense dark woods also sink, and a finished artwork can hardly be submerged. The reliable approach is to buy from a seller who can clearly state the species, origin, and which part of the log the piece came from.
Legal Provenance Is Part of the Grade
Ebony is a rare timber under international scrutiny. At the 16th CITES Conference of the Parties in 2013, **all Diospyros species from Madagascar were listed in Appendix II**, placing their logs, sawn wood, and veneer under permit control in international trade. For serious collecting, lawful and traceable provenance matters as much as the look of the wood; a piece whose history cannot be explained becomes a problem at resale and inheritance.
Beyond the Grade: Craft Sets the Ceiling
Fine timber is only the starting point. The same premium ebony leads to completely different results in different hands: cutting with the grain or forcing against it, whether an inlay seam closes tightly, at which grit the polishing stops. None of this appears on a grading table, yet it decides whether a piece will last generations.
In Ebony Realm's work, artist Zhen-Kun Zeng takes premium ebony as the body and combines natural chalcedony, mother-of-pearl, and metal wire, letting that deep black become the ground that carries light. The grade of the material provides a solid foundation; three decades of hand knowledge is what brings the wood to life.
Conclusion
Once you can read ebony grades, you hold the basis for judging whether a price is fair: check heartwood purity and ratio first, confirm density and oil content next, then verify that the provenance is clear. After those three steps, the rest returns to the work itself. Ask yourself whether this is something you want to keep looking at for a long time.