Allanite and Rubellite Physical Properties

Allanite and Rubellite Chemical Formula

While comparing Allanite 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 Allanite and Rubellite chemical formula.

• Chemical formula of Allanite- Ca(Ce,La,Y,Ca)Al2(Fe,Al)Si3O12(OH)
• 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.

Allanite and Rubellite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Allanite and Rubellite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Allanite and Rubellite Optical Properties during the identification of gemstone. Specific gravity of Allanite is 3.01-3.06 whereas that of Rubellite is 3.01-3.06.