My personal dice are made from Buckeye Burl. This wood makes for some seriously beautiful dice. California Buckeye is one of seven types of buckeye tree in North America. There are also related trees in Mexico, Asia, South America and India. Buckeye burl is highly prized for the beautiful pattern of burl eyes, swirls and other figure. Spalting of the wood transforms it from the off white color to a mixture of off white with grey blue or purple. Amber and other colors sometimes also occur.