White, Colorless, Yellow, Green, Blue, Reddish, Brown, Red, Brown
White, Colorless, Blue, Red, Green, Yellow, Violet
Uneven
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)
BaSO4
(Ca,Mg,Mn)SiO 3Gemdat.org , Management Team (2012)