Australia, Southern and central Africa, green, brown, Australia, France, green, brown, Australia, France
Australia, Canada, Guatemala, Italy, Kenya, Mexico, Turkey, Mexico, Guatemala, Mexico, Guatemala
Green, Colorless, gray, Yellow, White
Brown, Green
Uneven, Yellow, White, UnevenWalter Schumann, Gemstones of the world (2001) More from other references, Brittle, Metallic
Conchoidal, ConchoidalWalter Schumann, Conchoidal