Rubellite and Feldspar Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.01-3.06
2.56-2.75
Fracture
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)
Uneven, Conchoidal, Uneven, Conchoidal, Gemstones of the world (2001)
Cleavage
Not Available
two or three
Mohs Hardness
7-7.5
6-6.5
Chemical Composition
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.
Not Available
Rubellite and Feldspar Chemical Formula
While comparing Rubellite and Feldspar 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 Rubellite and Feldspar chemical formula.
- 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.
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Rubellite and Feldspar Specific Gravity
Another important criteria for qualitative analysis of gemstones is Rubellite and Feldspar Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Rubellite and Feldspar Optical Properties during the identification of gemstone. Specific gravity of Rubellite is 2.56-2.75 whereas that of Feldspar is 2.56-2.75.