Green, Colorless, gray, White, Green, Colorless, gray, White
White, Colorless, Blue, Red, Green, Yellow, Violet
Conchoidal, Brittle, Conchoidal
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)
NaCa2Mg5Si7AlO22(OH)2
(Ca,Mg,Mn)SiO 3Gemdat.org , Management Team (2012)