1 Physical Properties
1.1 Tenacity
1.2 Solubility
Not Available
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
2.58-2.913.70-3.90
1
7.18
2.5 Fracture
Conchoidal, Conchoidal, Gemstones of the world (2001)
Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle, Conchoidal
2.6 Cleavage
Indiscernible
Perfect on {011}, fair on {100}, poor on {110}
2.7 Mohs Hardness
2.11 Chemical Composition
SiO2
Cu 3(OH) 2(CO 3) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references