Grenadilla: origins and identity

Grenadilla(Dalbergia melanoxylon) is a woody species found in the savannahs and dry forests of Central and East Africa, particularly in Tanzania, Mozambique and Zimbabwe. Known in English asAfrican blackwood, it belongs to the Fabaceae family and grows slowly, which contributes to the exceptional density of its wood. It has been used for centuries by luthiers the world over to make clarinets, oboes and African flutes - but cutlers recognized the same qualities long before its reputation went global.

Properties and technical characteristics

Grenadilla is one of the heaviest and hardest woods available for craft cutlery. Its density is around 1.28 g/cm³, making it one of the densest woods on the planet - it sinks in water. Its Janka hardness is estimated at around 3,800 lbf, well above that of most common tropical woods.

Color and grain

Its color ranges from very dark brown to deep black, often streaked with purplish or grayish veins depending on where it has been cut. The grain is extremely fine and tight, almost imperceptible to the naked eye. This grain allows for mirror polishing and very clean edges, which are particularly attractive on a quality knife handle.

Stability and machining behaviour

Despite its hardness, grenadilla is dimensionally stable: it moves little once dry, and withstands workshop humidity variations well. On the other hand, its machining requires perfectly sharp tools - it quickly dulls non-carbide blades - and generates a fine, irritating dust that requires appropriate respiratory protection.

How to choose grenadilla for your knife?

Grenadilla is suitable for all levels, but its use requires experience or good equipment. Here are some points to consider:

• Knife type: grenadilla is equally suited to sleek hunting knives, kitchen knives and prestige folding knives. Its formal, mineral appearance blends particularly well with carbon steel or damascus blades.
• Finishing: grenadilla accepts polishing with natural wax (carnauba) or baked linseed oil, which nourishes without weighing down the appearance. A mirror-polished finish fully reveals its dark reflections.
• Level: a beginner cutler can use it as a handle on plates (limited shaping), but work on complete blocks or backsplashes requires suitable tools.
• Matching: its intense black contrasts well with nickel silver, brushed stainless steel or alpaca bolsters. Avoid oxidizable metals in contact with the tannin present in the essence.

Mercorne and grenadilla: 34 years of selection

Grenadilla has featured in the Mercorne catalog since the company's earliest years. Each batch is selected for evenness of color and absence of hidden defects - internal splits, knots or grain variations - that compromise shaping. The pieces are cut in France, in our Puy-de-Dôme workshop, according to standard cutlery formats: flat handles, blocks, half-round and slices. Same-day shipping on orders placed before 2pm, returns accepted within 15 days, free delivery on orders over €90.

Frequently asked questions about grenadilla

Is grenadilla the same as ebony?

No. Grenadilla(Dalbergia melanoxylon) and ebony(Diospyros spp.) are two distinct species from different botanical families. They share a dark color and high density, but grenadilla is generally harder and denser than most commercial ebony. Luthiers prefer grenadilla for wind instruments precisely because of its superior acoustic properties, which differ from those of ebony.

Is grenadilla difficult to work with in the workshop?

It requires sharpened or tungsten carbide tools. It drills and mills well, but quickly wears out conventional high-speed steel tools. Dust is irritating to the respiratory tract: a FFP2 mask is recommended during machining. Once shaped and polished, it presents no particular finishing difficulties.

Should grenadilla be treated before mounting the handle?

Grenadilla naturally contains oils that give it a certain resistance. Treatment with baked linseed oil or beeswax is sufficient for most uses. For knives exposed to water (kitchen, outdoor), a light impregnation with tung oil enhances protection without masking the wood's natural appearance.

Is grenadilla a protected species?

Grenadilla(Dalbergia melanoxylon) has been listed in Appendix II of CITES since 2016, which regulates its international trade without prohibiting it. All the lots offered by Mercorne come from documented channels that comply with current regulations. Proof of origin can be provided on request.

What's the difference between grenadilla and cocobolo or rosewood?

These three species all belong to the Dalbergia genus, but differ in color, density and behavior. Grenadilla is considerably denser and blacker than cocobolo (veined orange-brown) or purple rosewood. It is also more difficult to machine, but offers superior durability over time.