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
White, White, Colorless, Red, Reddish
Uneven, UnevenArthur Thomas, Gemstones (2009)
Uneven, Brittle, Metallic, Gemstones (2009)
KCa 4Si 8O 20(F,OH) · 8H 2OUlrich Henn and Claudio C.
Na 2[Al 2Si 3O 10] · 2H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references