Brown, Yellow, White, Brown, Greenish, Yellow, White
White, Blue, Yellow, Brown, Green, Brownish, Greenish, gray
Uneven, Even, Yellow, White
Gemstones (2009), Flexible Flexible fragments.
K(Mg,Fe++)3[AlSi3O10(OH,F)2
Al 2Si 4O 10(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references