Natural Sapphirine 1.11 caratSapphirine is a rare mineral that often forms attractive, gem quality crystals. It is named for its sapphire blue color, although it can also appear in shades of green, grey, and brown. Here are some key aspects of Sapphirine: 1. Chemical Composition: Sapphirine is a complex silicate mineral, with the formula (Mg,Al)(Al,Si)O. It includes magnesium, aluminum, silicon, and oxygen. 2. Physical Properties: Color: Typically blue, but can also be green,