Ettringite and Taaffeite Physical Properties

Ettringite and Taaffeite Chemical Formula

While comparing Ettringite and Taaffeite 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 Taaffeite 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 Taaffeite- Mg 3Al 8BeO 16Walter Schumann , Gemstones of the world (2001) More from other references

Ettringite and Taaffeite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Ettringite and Taaffeite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Ettringite and Taaffeite Optical Properties during the identification of gemstone. Specific gravity of Ettringite is 3.60-3.61 whereas that of Taaffeite is 3.60-3.61.