Mexican fire opal and Faustite Physical Properties

Mexican fire opal and Faustite Chemical Formula

While comparing Mexican fire opal and Faustite 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 Mexican fire opal and Faustite chemical formula.

• Chemical formula of Mexican fire opal- SiO2·nH2O
• Chemical formula of Faustite- (Zn,Cu)Al 6(PO 4) 4(OH) 8 · 4H 2OMichael O’Donoghue , Gems, Sixth Edition (2006)

Mexican fire opal and Faustite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Mexican fire opal and Faustite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Mexican fire opal and Faustite Optical Properties during the identification of gemstone. Specific gravity of Mexican fire opal is 2.9 whereas that of Faustite is 2.9.