Southern and central Africa
Italy, India, USA, Canada
White, Colorless, Blue, Red, Green, Yellow, Violet
White, Colorless, Green, Yellow, Brown, Brown, Colorless, Yellow, White, Green
Not Available
Brittle, Uneven, Brittle, Uneven
SiO 2 (with trace Cr minerals) Gemdat.org , Management Team (2012)
NaCa16Si23AlO60(OH)8•64(H2O)