1 Physical Properties
1.1 Tenacity
1.2 Solubility
Not Available
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
1.98-2.502.90-3.00
1
7.18
1.10 Fracture
Conchoidal, Conchoidal, Gemstones of the world (2001)
Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Brittle, Metallic
1.11 Cleavage
1.12 Mohs Hardness
1.17 Chemical Composition
SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001)
CaBSiO 4(OH)Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references