Green, Black, White, Grey, Green, Black, White, Grey, Green, Black, gray, Black, Green, Black, gray, Black
White, Blue, Yellow, Brown, Green, Brownish, Greenish, gray
Uneven, UnevenArthur Thomas, Gemstones (2009), Splintery
Gemstones (2009), Flexible Flexible fragments.
Ca 2(Mg,Fe) 5Si 8O 22(OH) 2Ulrich Henn and Claudio C.
Al 2Si 4O 10(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references