Chromite and Rubellite Physical Properties
Tenacity
Brittle
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
4.5-4.8
3.01-3.06
Fracture
Uneven
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)
Cleavage
None, parting may develop along {111}
Not Available
Chemical Composition
Fe++Cr2O4
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.
Chromite and Rubellite Chemical Formula
While comparing Chromite 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 Chromite and Rubellite chemical formula.
- Chemical formula of Chromite- Fe++Cr2O4
- 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.
Chromite and Rubellite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Chromite and Rubellite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Chromite and Rubellite Optical Properties during the identification of gemstone. Specific gravity of Chromite is 3.01-3.06 whereas that of Rubellite is 3.01-3.06.