Russia, Brazil, Madagascar, USA, Russia, Brazil, Yellow, Madagascar, Namibia, USA, Russia, Brazil, Yellow, Madagascar, Namibia, USA
Canada, USA, Brazil, Italy, Mozambique, Zimbabwe, Russia, Burma, Australia
Yellow
Colorless, gray, Yellow, White
Not Available
Subconchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references, Brittle, Conchoidal