Black Walnut
Juglans nigra • Hardwood
Grain Pattern
Straight grain with sections of cathedral figure and irregular swirls near knots; medium texture with semi-open pores.
Color Description
Medium to dark brown heartwood with chocolate tones and darker streaks. Sapwood is pale yellowish-gray. Luster is moderate; wood tends to lighten and take on a golden patina with UV exposure over time.
Hardness Rating
1,010 lbf (Medium)
Durability Rating
Durable to Very Durable regarding rot resistance; moderately resistant to insect attack.
Common Uses
High-end furniture, cabinetry, veneer, gunstocks, interior trim, and turned objects.
Geographic Origin
Eastern North America (United States and Canada)
Market Value & Sustainability
Estimated Market Value
$10.00 - $18.00 per board foot (depending on width and grade)
Wood Age Estimate
The sample appears to be air-seasoned or kiln-dried rough-sawn lumber, likely less than 20 years old since Harvest, though oxidation suggests it has been stored for several years.
Sustainability Status
Not listed in CITES Appendices or on the IUCN Red List; widely available and generally considered sustainable in North America.
Workability
Excellent workability with both hand and machine tools. Planes and sands easily. Glues and finishes well, though large knots can cause localized grain tearout.
Notable Features
Distinctive mild, nut-like scent when being worked; contains juglone which can be a mild irritant; excellent dimensional stability.
Finish Recommendations
Penetrating oils (Tung or Danish oil) to highlight grain depths; polyurethane for high-wear surfaces; or shellac for a traditional luster.
Identification Confidence
High; the characteristic chocolate-brown color, pore structure, and specific grain movement around small knots are classic diagnostic features of Juglans nigra.