Boracite is found in evaporite deposits, Southern and central Africa, anhydrite and/or halite. Arthur Thomas
USA, Mexico, Brazil, Switzerland, Sri Lanka, Burma, Madagascar, Color: colorless, light yellow, light pink, Hardness: 7, Refractive index: 1.63 1.64, Density: 2.98 3.03, Chemical composition: Ca(B2Si2O8), Crystal structure: orthorhombic, Origins: USA, Mexico, Brazil, Germany, Switzerland, Sri Lanka, Burma, Madagascar, Japan. Colorless danburites are common, with light pink or yellowish stones being more rare and expensive. Only eye clean pieces are valuable.
Colorless, White, Yellow, Blue, Green, Colorless, gray, Yellow, White
Yellow, Brown, Colorless, White, gray, Brownish, Yellow