Malachite and Rubellite Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.25-4.10
3.01-3.06
Fracture
Conchoidal, Conchoidal, Gemstones (2009), Uneven
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)
Cleavage
Perfect on { 2 01} fair on {010}
Not Available
Mohs Hardness
3.5-4
7-7.5
Chemical Composition
Cu2CO3(OH)2
Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) Formula given for elbaite.
Malachite and Rubellite Chemical Formula
While comparing Malachite and Rubellite 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 Malachite and Rubellite chemical formula.
- Chemical formula of Malachite- Cu2CO3(OH)2
- Chemical formula of Rubellite- Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) Formula given for elbaite.
Malachite and Rubellite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Malachite and Rubellite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Malachite and Rubellite Optical Properties during the identification of gemstone. Specific gravity of Malachite is 3.01-3.06 whereas that of Rubellite is 3.01-3.06.