Color/Appearance: Heartwood tends to be darker than temperate walnut species, with a deep chocolate brown color, sometimes with a purplish hue. May also contain streaks of lighter-colored wood mixed throughout the heartwood, which can sometimes be extensive and result in a high degree of waste. Grain figuring such as curl seems to be much less common than other walnut species.
Grain/Texture: Grain is usually straight, but can be irregular. Has a medium to coarse texture and good natural luster.
Endgrain:Diffuse-porous; large to very large pores, few; solitary and radial multiples of 2-3; tyloses commonly present; growth rings distinct; narrow rays not visible without lens, spacing normal to fairly close; parenchyma banded.
Rot Resistance:Peruvian Walnut is rated as moderately durable in terms of decay resistance, though it is susceptible to insect attack.
Workability:Typically easy to work provided the grain is straight and regular. Planer tearout can sometimes be a problem when surfacing pieces with irregular or figured grain. Glues, stains, and finishes well.
Odor:Peruvian Walnut has a faint, mild odor when being worked that is similar toBlack Walnut.