White, Blue, Yellow, Brown, Green, Brownish, Greenish, gray
White, Blue, Yellow, Brown, Green, Brownish, Greenish, gray
Gemstones (2009), Flexible Flexible fragments.
Gemstones (2009), Flexible Flexible fragments.
Al 2Si 4O 10(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Al 2Si 4O 10(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references