Afghanistan, Pakistan, Burma, Brazil, Madagascar, USA, Canada, Russia, Madagascar, Brazil, Canada, Mexico, Madagascar, Brazil, Canada, Mexico
Pakistan, Italy, Russia, China, Brazil, Switzerland, Madagascar, Austria, Canada
Colorless, pink
Reddish, Brown, Yellow, Green, Red, gray
Gemstones of the world (2001), UnevenWalter Schumann, Gemstones of the world (2001)
Sub-Conchoidal, Conchoidal, Brittle
Strong trichroism: colorless pink violetHerve Nicolas Lazzarelli
Strong: X = nearly colorless; Y = yellow to green; Z = red to yellow-orange