Amethyst is a mineral gemstone that comes from quartz. It is usually transparent and best known for its violet color. Even though it is a form of quartz, it has more iron oxide (Fe2O3) than any other kind of quartz.
Because of this, some experts think that its color comes from the iron in it. Amethyst is found in Brazil, Uruguay, Canada (Ontario) and America (North Carolina). The rock amethyst is the birthstone of the month February. In the Mohs scale, it has a hardness of seven.Formula: Silica (silicon dioxide, SiO2). Identification: Color: Purple, violet, dark purple.
Crystal habit: 6-sided prism ending in 6-sided pyramid (typical). Twinning: Dauphine law, Brazil law, and Japan law. Specific gravity: 2.65 constant; variable in impure varieties. This item is in the category "Collectibles\Rocks, Fossils & Minerals\Crystals & Mineral Specimens\Crystals".The seller is "rocksology" and is located in this country: US. This item can be shipped to United States.