Spalted Tamarind — Tamarindus indica
High; the characteristic black zone lines against a yellowish-tan background are diagnostic of Spalted Tamarind. confidence

Spalted Tamarind

Tamarindus indica · Exotic/Tropical

Type
Exotic/Tropical
Origin
Native to tropical Africa; widely cultivated in Southeast Asia, Central and South America, and Florida/Caribbean.
Hardness
2,690 lbf (Extremely Hard)
Durability
Moderately Durable to Non-durable; the heartwood is naturally resistant to rot, but the spalting process (fungi) compromises the wood's structural integrity over time.

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Grain Pattern

Highly irregular and variable due to Spalting; features black zone lines caused by fungal activity, with an interlocked to wavy grain in the base wood.

Color & Appearance

Heartwood is typically a medium to dark reddish brown; however, this spalted sample displays a pale yellowish-gray background with dramatic, high-contrast black and dark brown lines.

Hardness (Janka)

2,690 lbf (Extremely Hard)

Durability & Decay Resistance

Moderately Durable to Non-durable; the heartwood is naturally resistant to rot, but the spalting process (fungi) compromises the wood's structural integrity over time.

Value & Sustainability

Estimated Market Value
Approximately $15.00 to $25.00 per board foot for figured/spalted turning blanks.
Wood Age Estimate
Cannot be precisely determined from the image, but the heavy spalting indicates the wood was harvested in a decaying state or left in a humid environment for a prolonged period.
Sustainability Status
Not listed in the CITES Appendices or on the IUCN Red List of Threatened Species; widely available and sustainable.

Common Uses

Turning (bowls and pens), knife handles, furniture accents, veneer, and decorative inlay.

Geographic Origin

Native to tropical Africa; widely cultivated in Southeast Asia, Central and South America, and Florida/Caribbean.

Workability

Difficult due to extreme density and interlocked grain; the spalted (rotted) areas are much softer and prone to "punky" texture, requiring stabilizers (like CA glue or resin) during machining.

Finish Recommendations

Sanding sealer is essential for inconsistent density; high-gloss polyurethane or CA glue finishes work best to highlight the chatoyance and black line detail.

Notable Features

Features distinct black "zone lines" created by fungus battling for territory; produces a faint, tart odor while being worked; dust can be an irritant.

Learn more about Spalted Tamarind in the Wood Encyclopedia
Identified July 6, 2026