Goncalo Alves (Tigerwood)
Astronium graveolens • Exotic/Tropical Hardwood
Grain Pattern
Wavy and interlocked, displaying prominent dark brown-to-black irregular streaks that create a 'tiger-stripe' figure against a lighter background.
Color Description
Heartwood is typically a reddish-brown with irregular dark streaks. The wood has a high natural luster and develops a richer, deeper patina over time with exposure to light.
Hardness Rating
2,170 lbf (Very Hard)
Durability Rating
Very Durable: Highly resistant to moisture, rot, and decay; very resistant to insect attack due to high density and natural oils.
Common Uses
Musical instruments (recorders, guitars), high-end furniture, cabinetry, flooring, boat building, and turned objects.
Geographic Origin
Central and South America (predominantly Brazil, Mexico, and Paraguay).
Market Value & Sustainability
Estimated Market Value
$15.00 to $25.00 per board foot depending on figure intensity.
Wood Age Estimate
Modern era (likely 20-40 years old) based on the brand 'GILL' and the condition of the surface finish and hardware.
Sustainability Status
Not currently listed on CITES Appendices or the IUCN Red List; generally considered sustainable but availability varies by region.
Workability
Difficult to work with hand tools due to high density and interlocked grain which causes tearout. Glues and finishes well, though natural oils can sometimes require surface wiping with solvent before gluing.
Notable Features
Extremely heavy and dense; has excellent acoustic properties for woodwinds; high silica content can dull cutting tools quickly.
Finish Recommendations
Lacquer or polyurethane is common for instruments to protect against moisture from breath. It accepts high-gloss finishes exceptionally well.
Identification Confidence
High. The distinct irregular dark striping known as 'tiger-striping,' combined with the turning characteristics and its common use by the Gill instrument company, is characteristic of Goncalo Alves.