A friend gave me a disc out of a whale vertibra to use for knife handles. I thought I'd give it a shot, but the bone is a little pithy and very light. Anyhow, I didn't like the texture and decided to put a coat of drakes leather finish on it. It turned out splotchy, but where it "took" it colored the bone a purplish color. Take a look and see what you think. I like it.