Black Siris is a medium sized hardwood species from SE Asia that can also be known as Ceylon Rosewood, Kali Siris, and Bilwhara. It generally grows in the tropics but a few have been known to grow in temperate zones. The heartwood in Bhilwara wood is golden to dark brown/black with some alternating color stripes. It is a durable and dense hardwood that is good for woodworking projects as it works and finished well. It can be compared to Hawaiian Koa in look and workability.