Koa
Acacia koa • Exotic/Tropical Hardwood
Grain Pattern
Wavy and interlocked grain with significant curl figure and chatoyance; features a distinct cathedral pattern when turned as a bowl.
Color Description
Medium golden to reddish-brown heartwood with darker brown streaks. Sapwood is yellowish-white. Shows high luster and often darkens slightly with age.
Hardness Rating
1,110 lbf (Medium)
Durability Rating
Durable to Very Durable regarding decay resistance, though susceptible to insect attack.
Common Uses
Musical instruments (especially ukuleles and guitars), high-end furniture, turned bowls, cabinetry, and veneers.
Geographic Origin
Endemic to the Hawaiian Islands, USA.
Market Value & Sustainability
Estimated Market Value
$50.00 to $150.00 per board foot depending on the degree of curl figure.
Wood Age Estimate
Recently crafted (within 5-10 years) based on the high-gloss finish clarity and lack of significant oxidation or surface wear.
Sustainability Status
Not listed in CITES Appendices or the IUCN Red List, but highly regulated by the state of Hawaii; availability is limited to dead or fallen trees and specific harvest permits.
Workability
Generally easy to work, though figured sections with interlocked grain can cause tearout during planing or turning. Glues and finishes well.
Notable Features
Famous for its unique chatoyance (shimmer) and resonance in acoustic instruments. It is one of the most expensive and sought-after domestic woods in the USA.
Finish Recommendations
High-gloss lacquer or polyurethane is commonly used to enhance the depth of the figure; natural oils or waxes can be used for a more organic feel.
Identification Confidence
High; the combination of golden-amber hues, tight curly figure, and the specific vessel pore structure is characteristic of Hawaiian Koa.