Southern and central Africa, Orange, blue, Orange, blue
India, Canada, Brazil
White, Blue
Colorless, Reddish, White, pink, Green, Yellow, Violet, White, pink, Green, Yellow, Violet, White, Colorless, Blue, Green, Brown, Yellow, pink, Violet, White, pink, Green, Yellow, Violet
Irregular, Irregular, Gemstones of the world (2001)
Uneven, UnevenArthur Thomas, Gemstones (2009)
CaCO 3Ulrich Henn and Claudio C.
KCa 4Si 8O 20(F,OH) · 8H 2OUlrich Henn and Claudio C.