Faustite and Gedrite Physical Properties

Faustite and Gedrite Chemical Formula

While comparing Faustite and Gedrite 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 Gedrite 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 Gedrite- (Mg,Fe2+ ) 2[(Mg,Fe2+ ) 3Al 2](Si 6Al 2)O 22(OH) 2Anthony et al , Handbook of mineralogy (2001)

Faustite and Gedrite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Faustite and Gedrite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Faustite and Gedrite Optical Properties during the identification of gemstone. Specific gravity of Faustite is 3.15-3.259 whereas that of Gedrite is 3.15-3.259.