Pyrope and Allanite Physical Properties

Pyrope and Allanite Chemical Formula

While comparing Pyrope and Allanite 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 Pyrope and Allanite chemical formula.

• Chemical formula of Pyrope- Mg 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009)
• Chemical formula of Allanite- Ca(Ce,La,Y,Ca)Al2(Fe,Al)Si3O12(OH)

Pyrope and Allanite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Pyrope and Allanite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Pyrope and Allanite Optical Properties during the identification of gemstone. Specific gravity of Pyrope is 3.40-4.20 whereas that of Allanite is 3.40-4.20.