Black walnut is very highly prized for its straight, dark, heavy, strong, fine-grained heartwood, which is used to make fine furniture, valuable gunstocks, flooring, oars, and coffins. Because the species is now relatively rare in the wild, the timber is currently used for veneer as well.

Advantage
-Attractive wood grain
-Special dark color
-Strong durable
-Famous brand type of wood
-Rare

Disadvantage
-Expensive
-Difficult to get it in one piece
-Fair in swelling and shrinking 
-Difficult to get it in perfect character