1 Physical Properties
1.1 Tenacity
1.2 Solubility
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
1.5 Fracture
Uneven, Brittle
Conchoidal, Metallic, UnevenArthur Thomas, Gemstones (2009), Brittle, Conchoidal
1.6 Cleavage
Perfect on [100], [010], [001]
Fair in four directions forming octahedrons
1.7 Mohs Hardness
1.8 Chemical Composition
Not Available
Cu 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references