Brazil, Madagascar, Zambia, Sri Lanka, Burma, Russia, USA, Afghanistan
Australia, Spain, Brazil, Germany, Australia, Spain, Brazil, Germany, Australia, Spain, Brazil
Green, Blue, Yellow, Red, Brown, Blue
Green, Blue, Colorless
Not Available
Conchoidal, Splintery, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references, Brittle