Most likely spalted walnut; alternatives include spalted maple or another dark-streaked hardwood.
Juglans nigra (probable) · Hardwood; domestic North American species
AI-generated identification · may be incorrect- Type
- Hardwood; domestic North American species
- Origin
- Eastern and central North America, especially the Midwest and Appalachian regions.
- Hardness
- 1,010 lbf Janka; Medium hardness.
- Durability
- Moderately durable heartwood; reasonable decay resistance, but spalting indicates prior fungal activity and does not improve durability.
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Grain Pattern
Mostly straight to mildly irregular, with prominent dark spalting lines and localized irregular figure; appears flat- or plain-sawn.
Color & Appearance
Light tan sapwood contrasts sharply with medium brown to chocolate heartwood and nearly black streaks. Walnut commonly lightens slightly with prolonged exposure while sapwood yellows modestly.
Hardness (Janka)
1,010 lbf Janka; Medium hardness.
Durability & Decay Resistance
Moderately durable heartwood; reasonable decay resistance, but spalting indicates prior fungal activity and does not improve durability.
Value & Age
Approximately $10–$30 per board foot for attractive, kiln-dried spalted walnut; exceptional slabs may cost more.
AI estimate for general guidance only — not a professional appraisal. Actual value depends on grade, dimensions, condition, and local market demand.
- Wood Age Estimate
- Cannot be determined from the photograph; the slab appears recently milled, with no reliable surface-patina evidence.
Common Uses
Furniture, cabinetry, flooring, knife scales, turning, veneer, and decorative slabs.
Geographic Origin
Eastern and central North America, especially the Midwest and Appalachian regions.
Workability
Generally machines and sands well, though spalting can cause soft spots, tearout, and uneven sanding. Pre-drilling is advisable; gluing is usually straightforward after cleaning and flattening.
Finish Recommendations
Use a film finish such as satin polyurethane, lacquer, or shellac after thorough sanding and pore filling if desired; penetrating oil enhances contrast but may darken pale spalting.
Notable Features
Strong sapwood/heartwood contrast, dramatic black spalting, moderate weight, and good dimensional stability.