Green, Greenish, Blue, Red
White, Colorless, Greenish, White, Colorless, gray, pink, Greenish, White, Greenish, Reddish
Not Available
Uneven, Subconchoidal, Uneven, Subconchoidal, Conchoidal, Brittle
SiO 2Arthur Thomas , Gemstones (2009)
NaAlSi 2O 6 · H 2OMichael OâDonoghue , Gems, Sixth edition (2006) More from other references