1 Physical Properties
1.1 Tenacity
Not Available
Not Available
1.2 Solubility
Not Available
Not Available
1.4 Durability
Not Available
Not Available
1.7 Specific Gravity
1.98-2.502.90-3.20
1
7.18
1.8 Fracture
Conchoidal, Conchoidal, Gemstones of the world (2001)
UnevenArthur Thomas, Gemstones (2009), UnevenArthur Thomas, Gemstones (2009)
1.9 Cleavage
Not Available
Not Available
1.10 Mohs Hardness
1.11 Chemical Composition
SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001)
Ca 2Mg 5Si 8O 22(OH) 2Ulrich Henn and Claudio C.