Black Walnut
Juglans nigra • Hardwood
Grain Pattern
Principally straight grain when cut flat-sawn, showing cathedral patterns; occasionally exhibits wavy or curly figure and irregular knots as seen in this rough-cut end-grain cookie.
Color Description
Heartwood ranges from light brown to dark chocolate brown with darker streaks. Sapwood is pale yellow-gray to nearly white. Ages to a more golden-brown color over time with UV exposure.
Hardness Rating
1,010 lbf (Medium Hardness)
Durability Rating
Durable to Very Durable regarding decay resistance; susceptible to insect attack.
Common Uses
High-end furniture, cabinetry, gunstocks, interior trim, flooring, veneer, and wood turning.
Geographic Origin
Eastern North America
Market Value & Sustainability
Estimated Market Value
$10.00 - $18.00 per board foot depending on grade and figure; higher for wide slabs.
Wood Age Estimate
The sample appears to be from a relatively young limb or small trunk (approx. 15-25 years) based on growth ring density and current size, showing fresh rough-cut marks.
Sustainability Status
Not CITES listed and classified by IUCN as Least Concern; widely available and FSC certified sources exist.
Workability
Generally easy to work with both hand and machine tools. Planes and glues well, though it can have some tearout if the grain is irregular. Natural dark dust can be an irritant.
Notable Features
Distinctive mild, spicy odor when being worked. High tannin content and excellent dimensional stability once seasoned.
Finish Recommendations
Oil-based finishes (tung or linseed) beautifully enhance the dark tones; clear polyurethane or lacquer provide excellent protection for high-wear surfaces.
Identification Confidence
Medium. The dark chocolate heartwood transition to lighter sapwood and circular growth ring structure are consistent with a young Walnut log section, though rough surface texture obscures pore structure.