Ettringite and Sardonyx Physical Properties

Ettringite and Sardonyx Chemical Formula

While comparing Ettringite and Sardonyx 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 Ettringite and Sardonyx chemical formula.

• Chemical formula of Ettringite- Ca 6Al 2(SO 4) 3(OH) 12 26H 2OMichael O’Donoghue , Gems, Sixth Edition (2006)
• Chemical formula of Sardonyx- SiO 2Ulrich Henn and Claudio C.

Ettringite and Sardonyx Specific Gravity

Another important criteria for qualitative analysis of gemstones is Ettringite and Sardonyx Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Ettringite and Sardonyx Optical Properties during the identification of gemstone. Specific gravity of Ettringite is 2.55-2.70 whereas that of Sardonyx is 2.55-2.70.