Colorless, White, Brownish, Reddish, Black, Brownish, Black, Colorless, gray, White, Reddish, Brown
Green
Gemmological Tables (2004) More from other references
Gemmological Tables (2004) More from other references
TransparentUlrich Henn and Claudio C. Milisenda
Gemmological Tables (2004) More from other references