Australia, Austria, Brazil, Canada, Ethiopia, Italy, Mexico, Mozambique, Southern and central Africa, Switzerland
Afghanistan, Pakistan, Burma, Brazil, Madagascar, USA, Canada, Russia, Madagascar, Brazil, Canada, Mexico, Madagascar, Brazil, Canada, Mexico
Irregular/uneven, UnevenAnthony et al, Handbook of mineralogy (2001), Brittle, Uneven
Gemstones of the world (2001), UnevenWalter Schumann, Gemstones of the world (2001)
X: colourless Y: colourless Z: colourless
Strong trichroism: colorless pink violetHerve Nicolas Lazzarelli