Idocrase and Ettringite Physical Properties

Idocrase and Ettringite Chemical Formula

While comparing Idocrase and Ettringite 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 Idocrase and Ettringite chemical formula.

• Chemical formula of Idocrase- Ca10(Mg,Fe)2(Si2O7)2(SiO4)2O(OH)2
• Chemical formula of Ettringite- Ca 6Al 2(SO 4) 3(OH) 12 26H 2OMichael O’Donoghue , Gems, Sixth Edition (2006)

Idocrase and Ettringite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Idocrase and Ettringite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Idocrase and Ettringite Optical Properties during the identification of gemstone. Specific gravity of Idocrase is 1.77 whereas that of Ettringite is 1.77.