Faustite and Gahnite Physical Properties

Faustite and Gahnite Chemical Formula

While comparing Faustite and Gahnite 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 Faustite and Gahnite chemical formula.

• Chemical formula of Faustite- (Zn,Cu)Al 6(PO 4) 4(OH) 8 · 4H 2OMichael O’Donoghue , Gems, Sixth Edition (2006)
• Chemical formula of Gahnite- ZnAl 2O 4Michael O’Donoghue , Gems, Sixth Edition (2006)

Faustite and Gahnite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Faustite and Gahnite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Faustite and Gahnite Optical Properties during the identification of gemstone. Specific gravity of Faustite is 4.00-4.62 whereas that of Gahnite is 4.00-4.62.