A work of art with unique wood grain and placement for each die. Also each die has its own inking for numbers and shading for both wood and resin. Finally, each die is hand polished multiple times to display the luster of the precious wood. No two dice will ever match, creating a true one-of-a-kind product. The Sapphire Grove dice set was crafted from a precious wood formerly reserved only for emperors. In the Ming dynasty there was a style of wood known as nanmu. Prized for its luster and resistance to decay, it was so valuable that only the royal families could afford their use.