AT A GLANCE
Diaphaneity:
Refractive Index:
Luster:
Mohs Hardness:
Semitransparent – Opaque
1.607 – 1.610
Vitreous
6.0
MORE INFORMATION
Color Range:
Red-Purple To Bluish Purple, Rarely Pink
Major Sources:
Japan, Liguria And Tuscany In Italy, India, South Africa; Mont Saint-Hilaire, Quebec, Canada, Australia