Goncalo alves
Gonçalo alves is a hardwood (from the Portuguese name, Gonçalo Alves). It is sometimes referred to as zebrawood or tigerwood — names that underscore the wood’s often dramatic, contrasting color scheme, that some compare to rosewood.
While the sapwood is very light in color, the heartwood is a sombre brown, with dark streaks that give it a unique look. The wood’s color deepens with exposure and age and even the plainer-looking wood has a natural luster.
Two species are usually listed as sources for gonçalo alves: Astronium fraxinifolium and Astronium graveolens, although other species in the genus may yield similar wood; the amount of striping that is present may vary. All trees grow in neotropical forests; Brazil is a major exporter of these woods.