Rubellite and Triplite Physical Properties
Specific Gravity
3.01-3.06
3.85-3.94
Fracture
Conchoidal
Conchoidal, Uneven
Cleavage
Indiscernible
{010} Good, {100} Distinct
Mohs Hardness
7-7.5
5-5.5
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.
(Mn2+ ,Fe2+ ,Mg,Ca) 2(PO 4)(F,OH)Michael OâDonoghue , Gems, Sixth Edition (2006)
Rubellite and Triplite Chemical Formula
While comparing Rubellite and Triplite 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 Triplite 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.
- Chemical formula of Triplite- (Mn2+ ,Fe2+ ,Mg,Ca) 2(PO 4)(F,OH)Michael OâDonoghue , Gems, Sixth Edition (2006)
Rubellite and Triplite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Rubellite and Triplite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Rubellite and Triplite Optical Properties during the identification of gemstone. Specific gravity of Rubellite is 3.85-3.94 whereas that of Triplite is 3.85-3.94.