Umbalite and Cuprite Physical Properties
Tenacity
Not Available
Brittle
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.62-4.33
5.85-6.15
Fracture
Uneven, Uneven, ConchoidalGemdat.org, Management Team (2012)
Conchoidal, Metallic, UnevenArthur Thomas, Gemstones (2009), Brittle, Conchoidal
Cleavage
Not Available
Fair in four directions forming octahedrons
Mohs Hardness
7-7.5
3.5-4
Chemical Composition
Mg 3Al 2(SiO 4) 3 -Mn2+3Al 2(SiO 4) 3Gemdat.org , Management Team (2012)
Cu 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Umbalite and Cuprite Chemical Formula
While comparing Umbalite and Cuprite physical properties, the important data you should know is its chemical composition. Since chemical formula defines the molecular structure of the crystal, most of the physical properties like color, tenacity, solubility are governed by Umbalite and Cuprite chemical formula.
- Chemical formula of Umbalite- Mg 3Al 2(SiO 4) 3 -Mn2+3Al 2(SiO 4) 3Gemdat.org , Management Team (2012)
- Chemical formula of Cuprite- Cu 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Umbalite and Cuprite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Umbalite and Cuprite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Umbalite and Cuprite Optical Properties during the identification of gemstone. Specific gravity of Umbalite is 5.85-6.15 whereas that of Cuprite is 5.85-6.15.