Colorless, Yellow, Brown, Green, Colorless, Green, Yellow, Red, Reddish, Brown
Greenish, White, White, gray, Greenish, Reddish, White, gray, Greenish, Green, gray, White, gray, Greenish, Green, gray
Brittle, Metallic, Brittle, Metallic
Uneven, Uneven, Gems, Sixth Edition (2006), Uneven, Conchoidal
Ca(Mg,Al)3(Al3Si)O10(OH)2
NaAlSi 3O 8Michael OâDonoghue , Gems, Sixth Edition (2006)