Black Walnut
Juglans nigra • Hardwood
Grain Pattern
Principally straight grain with some cathedral arching in the flat-sawn sections; features visible worm tracks and insect galleries affecting the figure.
Color Description
Medium chocolate brown heartwood with lighter, pale yellowish sapwood visible. It shows moderate luster and will lighten to a more golden-brown color over time with UV exposure.
Hardness Rating
1010 lbf (Medium)
Durability Rating
Durable to Very Durable regarding rot resistance; however, sapwood is susceptible to insect attack (evidenced by the exit holes in this sample).
Common Uses
Fine furniture, cabinetry, veneer, gunstocks, interior paneling, and turned items.
Geographic Origin
Eastern North America
Market Value & Sustainability
Estimated Market Value
$10.00 - $18.00 per board foot depending on figure and width (damaged/character grade may be lower).
Wood Age Estimate
The sample appears recently milled from old stock or reclaimed timber, showing significant oxidation and historic powderpost beetle or wood-borer damage suggesting the log sat for some time before processing.
Sustainability Status
Not listed in CITES Appendices or on the IUCN Red List; widely available and generally managed sustainably in North America.
Workability
Excellent workability with both hand and machine tools; glues, stains, and finishes well, though the insect tracks require filling for a smooth surface.
Notable Features
Distinctive mild spicy scent when cut; contains juglone which can be an irritant; known for excellent dimensional stability.
Finish Recommendations
Penetrating oils or wiping varnish to highlight the natural color; epoxy filler is recommended for the insect galleries to stabilize the surface.
Identification Confidence
High; the characteristic chocolate-brown color paired with the specific texture of the grain and the common occurrence of sapwood insect damage is diagnostic for Juglans nigra.