Poudretteite and Rubellite Physical Properties
Tenacity
Brittle
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.51-2.53
3.01-3.06
Fracture
Conchoidal, Splintery
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)
Cleavage
None
Not Available
Chemical Composition
KNa 2B 3Si 12O 30Michael OâDonoghue , Gems, Sixth Edition (2006)
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.
Poudretteite and Rubellite Chemical Formula
While comparing Poudretteite 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 Poudretteite and Rubellite chemical formula.
- Chemical formula of Poudretteite- KNa 2B 3Si 12O 30Michael OâDonoghue , Gems, Sixth Edition (2006)
- 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.
Poudretteite and Rubellite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Poudretteite and Rubellite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Poudretteite and Rubellite Optical Properties during the identification of gemstone. Specific gravity of Poudretteite is 3.01-3.06 whereas that of Rubellite is 3.01-3.06.