Black Walnut
Juglans nigra • Hardwood
Grain Pattern
Generally straight but features irregular cathedral patterns, swirls, and crotch figure as seen in the wide flat-sawn sections of this sample; texture is medium.
Color Description
Heartwood ranges from light brown to a deep chocolate brown with dark streaks. Sapwood is pale yellow-gray (not visible here). It possesses a natural luster and tends to lighten over time with UV exposure.
Hardness Rating
1010 lbf (Medium)
Durability Rating
Very Durable; highly resistant to heartwood decay, though susceptible to insect attack (specifically powderpost beetles).
Common Uses
High-end furniture, cabinetry, gunstocks, interior paneling, veneer, flooring, and turned objects.
Geographic Origin
Eastern North America (United States and Canada).
Market Value & Sustainability
Estimated Market Value
$10.00 to $20.00 per board foot depending on figure and width.
Wood Age Estimate
20-50 years; the semi-gloss finish and oxidation suggest a vintage piece of furniture, likely mid-century or late 20th century construction based on the patina.
Sustainability Status
Not listed in CITES Appendices or on the IUCN Red List; widely available and generally considered sustainable in its native range.
Workability
Excellent workability with both hand and machine tools. It planes, glues, and finishes exceptionally well, though it can occasionally have irregular grain that causes tearout.
Notable Features
Distinctive mild, sweet odor when worked; contains juglone which can be a mild irritant; famous for its stability and steam-bending properties.
Finish Recommendations
Oil-based finishes (tung or linseed) enhance the figure; clear lacquer or polyurethane are common for protection. Avoid heavy stains that mask the natural chocolate hues.
Identification Confidence
High; the characteristic chocolate-brown color, semi-porous grain structure, and specific cathedral figuring are hallmarks of North American Black Walnut.