No. 1 Jujutsu Use ☆ Pyrite Skull ☆ 31mm Thank you for always viewing. We will provide information about the product. This is a skull made of pyrite. Pyrite is iron sulfide. It is a very beautiful mineral that turns golden when iron reacts with sulfur. Its beauty was called "Fool's Gold." The skull is well made. Please use it for curses, jujutsu, interior decoration, etc. The size is 45 x 33 x 31mm. Thank you very much.