Black Walnut (Sapwood/Heartwood Transition)
Juglans nigra • Hardwood
Grain Pattern
Straight to slightly wavy or irregular grain. The sample shows a flat-sawn cathedral pattern with visible medullary rays and some feathered figure near the transition zone.
Color Description
Light blond to creamy white sapwood transitioning into yellowish-brown and darker chocolate-brown heartwood. Features a dull to semi-lustrous finish; typically darkens and warms with age/UV exposure.
Hardness Rating
1,010 lbf (Medium)
Durability Rating
Durable to Very Durable regarding heartwood rot resistance; sapwood is susceptible to insect attack.
Common Uses
High-end furniture, cabinetry, veneer, gunstocks, interior trim, and turned objects.
Geographic Origin
Eastern United States and parts of Southern Canada.
Market Value & Sustainability
Estimated Market Value
$10.00 - $18.00 per board foot depending on figure and width.
Wood Age Estimate
Modern/recently milled (0-5 years). The lack of deep oxidation and the brightness of the sapwood suggest a fresh cut with minimal UV exposure.
Sustainability Status
Not listed in CITES Appendices or on the IUCN Red List; widely available and generally sustainable.
Workability
Excellent. Easy to work with both hand and machine tools. Planes smoothly, glues well, and takes a high polish. Can have a mild aromatic scent when being worked.
Notable Features
Distinctive mild, spicy odor when cut. Known for high dimensional stability and shock resistance. Fine, uniform texture.
Finish Recommendations
Best suited for penetrating oils (tung or linseed) to enhance natural figure, or wipe-on-poly/lacquer for protection. Sapwood may require tinting/dyeing if a uniform dark color is desired.
Identification Confidence
High. The color transition from creamy sapwood to chocolate heartwood, combined with the characteristic pore structure and grain movement seen in the image, is diagnostic of Juglans nigra.