Black Walnut
Juglans nigra • Hardwood
Grain Pattern
Semi-ring-porous to diffuse-porous. The sample shows a flat-sawn (plain-sawn) cathedral figure with some slight waving and irregular grain around small knots.
Color Description
Heartwood ranges from light coffee to dark chocolate brown with occasional purplish-gray streaks. Sapwood is typically pale yellowish-gray. This sample shows the natural, unsteamed medium brown patina with visible luster. Over time, it tends to lighten slightly to a more golden brown.
Hardness Rating
1,010 lbf (Medium)
Durability Rating
Durable and very resistant to heartwood decay, though sapwood is susceptible to insect attack.
Common Uses
High-end furniture, cabinetry, luxury flooring, gunstocks, musical instruments (especially guitar backs/sides), turning, and veneer.
Geographic Origin
Native to Eastern North America (USA and Canada).
Market Value & Sustainability
Estimated Market Value
Approximately $12.00 to $18.00 per board foot, depending on regional availability, width, and grade.
Wood Age Estimate
The sample appears to be freshly milled or recently processed stock (within the last 1-5 years) based on the sharp edges and lack of significant oxidation or surface wear.
Sustainability Status
Not listed in the CITES Appendices or on the IUCN Red List; widely available and generally considered sustainable with FSC certification often available.
Workability
Excellent workability with both hand and machine tools. It planes smoothly, holds screws and nails well, and glues easily. It is favored for its ability to hold crisp detail in carving and turning.
Notable Features
Features a distinct, mild, spicy-sweet scent when worked. It is relatively lightweight for a hardwood but has high dimensional stability after seasoning. Known for producing moderate allergic reactions in some individuals.
Finish Recommendations
Tung oil or Linseed oil is highly recommended to enhance the natural depth and chatoyance. Polyurethane or lacquer are excellent for durability. No special preparation needed beyond typical sanding to 220 grit.
Identification Confidence
High. The rich chocolate brown color variation, open-pore structure visible in the cathedral grain, and specific luster are classic diagnostic traits of Juglans nigra.