1 Physical Properties
1.1 Tenacity
1.3 Solubility
Not Available
Not Available
1.5 Durability
Not Available
Not Available
1.6 Specific Gravity
2.58-2.643.70-3.90
1
7.18
1.4 Fracture
Gemstones of the world (2001)
Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle, Conchoidal
1.5 Cleavage
Not Available
Perfect on {011}, fair on {100}, poor on {110}
1.6 Mohs Hardness
1.16 Chemical Composition
SiO 2Walter Schumann , Gemstones of the world (2001)
Cu 3(OH) 2(CO 3) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references