How to Identify Okoumé

Start with weight and color together, because the combination is telling. Okoumé is light in the hand — noticeably lighter than true mahogany or sapele — and warm-toned, running from golden-tan and honey-yellow to salmon-pink and light reddish-brown. A thumbnail presses in easily, confirming the soft, low-density character. If a warm pinkish-tan board feels distinctly light and dents under light pressure, okoumé is a strong candidate, especially in plywood form where the wide, clean rotary-peeled veneer is a giveaway.

Look at the grain and figure. The grain is straight to shallowly interlocked with a medium, even texture, and the interlock shows up on quartered faces as a soft, low-contrast ribbon or stripe rather than any bold figure. Luster is low to moderate — never the deep glassy sheen of a dense hardwood — and the surface can feel slightly woolly where it has been worked. There is no strong ray fleck.

Check the end grain and pores. Okoumé is diffuse-porous, with medium-sized pores fairly evenly distributed and no ring of large early-wood pores. Because the wood is soft, freshly cut end grain tends to fuzz or crumble rather than shear glass-clean. Freshly worked okoumé has only a faint, mild odor. A useful tell in the shop is that it dulls edges faster than its softness suggests, thanks to silica in the wood — an unexpected bluntness on a light, soft board points toward okoumé.

The most common confusions are with the reddish African 'mahogany' group. Sapele and utile (sipo) are the same warm reddish-brown but are markedly heavier, harder, and denser, with a more pronounced interlocked ribbon stripe and a cedar-like scent when cut. Khaya (African mahogany) is also heavier and harder, with a coarser, more open texture. Genuine mahogany (Swietenia) is heavier and more lustrous with better figure. In every case, okoumé gives itself away by being the lightest and softest of the group — heft and a thumbnail dent separate it quickly. Because 'Gaboon' is just another name for okoumé, that label is a synonym rather than a look-alike.