Blackwood (Acacia Melanoxylon) is a medium size tree native to south eastern Australia and Tasmania. It grows in rainforests to a height of approximately 35 metres. It is a close relative of the Hawaiian Koa wood, which is famous for use in musical instruments. The heartwood varies from a lustrous golden brown to reddish dark brown with curly to interlocked grain. Blackwood is known for its unique and striking fiddleback, which occurs only in select trees, giving the wood a quilting effect reminiscent of gathered silk. Fiddleback is highly sought after by woodworkers for furniture, craft and musical instruments.