Gorgeous chunk of tumbled lapis (lapis lazuli) weighs 21.09 grams and measures 1.5" x .75" x .875". Lapis is a rock composed of many minerals, among them: sulfur, pyrite and sodalite. This chunk has excellent blue color and a good amount of pyrite,making it an interesting choice for jewelry. Lapis is also used metaphysically to treat issues of the lower extremities. Believed to strengthen spiritual insight.