Tigerwood This little stair jack used to bug me a great deal, but it’s really grown on me over time. Common trade names: Zebrawood, Tigerwood, Brazilian Tigerwood, Goncalo Alves Genus: Astronium fraxinifolium, Astronium graveolens Janka Hardness (pounds-force): 2250 Description: Known for its distinctively bold grain patterns and varied coloring, Goncalo Alves (American Tigerwood) features a […]