Southern and central Africa, Brazil, China, Zimbabwe, Switzerland, Zimbabwe, Switzerland
Australia, Spain, Brazil, Germany, Australia, Spain, Brazil, Germany, Australia, Spain, Brazil
Not Available
Conchoidal, Splintery, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references, Brittle
Gemstones of the world (2001)
Translucent, Opaque . May be translucent when backlit on the edges.