Cordierite Iolite and Ettringite Physical Properties

Cordierite Iolite and Ettringite Chemical Formula

While comparing Cordierite Iolite 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 Cordierite Iolite and Ettringite chemical formula.

• Chemical formula of Cordierite Iolite- Mg 2Al 4Si 5O 18Ulrich Henn and Claudio C.
• Chemical formula of Ettringite- Ca 6Al 2(SO 4) 3(OH) 12 26H 2OMichael O’Donoghue , Gems, Sixth Edition (2006)

Cordierite Iolite and Ettringite Specific Gravity

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