Gemstones — Lapis

Lapis Lazuli is a blue-colored gemstone that has been highly prized since ancient times. It is composed of several minerals, including lazurite (25-40%), sodalite, calcite, and pyrite. The blue color of Lapis Lazuli is due to the presence of lazurite, which is a silicate mineral containing sulfur, sodium, and aluminum.Lapis Lazuli is relatively soft with a hardness of 5-6 on the Mohs scale. It has a specific gravity of 2.7-2.9 and can be easily scratched or chipped. Despite its relative fragility, Lapis Lazuli has been used for thousands of years in jewelry making, decorative objects, and even as a pigment...