Hawaiian Koa
Acacia koa · Hardwood / Exotic
- Type
- Hardwood / Exotic
- Origin
- Endemic to the Hawaiian Islands, USA.
- Hardness
- 1,110 lbf (Medium)
- Durability
- Moderately Durable to Durable; generally resistant to decay but primarily used for interior decorative purposes.
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Grain Pattern
Highly figured with strong curly (tiger stripe) fiddleback and wavy grain. The grain is often interlocked or irregular, especially in highly figured specimens like this bowl.
Color & Appearance
Medium to dark golden brown with rich mahogany or reddish undertones. Features high luster and strong chatoyance (the wood appears to change depth/color as light hits it). Darker streaks and bands are prominent.
Hardness (Janka)
1,110 lbf (Medium)
Durability & Decay Resistance
Moderately Durable to Durable; generally resistant to decay but primarily used for interior decorative purposes.
Value & Sustainability
- Estimated Market Value
- $50 - $150 per board foot for high-figure or instrument-grade stock.
- Wood Age Estimate
- Based on the depth of the patina and the finished state, the sample appears modern (1-20 years), although the tree itself was likely 50-100+ years old before harvesting.
- Sustainability Status
- Not currently CITES listed, but classified as a species of concern; harvesting is strictly regulated and restricted to private lands or salvage in Hawaii.
Common Uses
Fine furniture, high-end musical instruments (ukuleles and acoustic guitars), cabinetry, woodturning, bowls, and veneers.
Geographic Origin
Endemic to the Hawaiian Islands, USA.
Workability
Generally easy to work, though highly figured grain can cause significant tearout during planing or turning. Sands well and glues without issue.
Finish Recommendations
High-gloss lacquer or polished oils (tung or linseed) are recommended to enhance the chatoyance and figure depth. Resin or shellac can be used to fill grain if a mirror finish is desired.
Notable Features
Famous for its chatoyancy and 'glow.' It is historically the most prized wood of Hawaii. Wood dust can be a sensitizer/irritant for some users.
