Faustite and Precious Opal Physical Properties

Faustite and Precious Opal Chemical Formula

While comparing Faustite and Precious Opal 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 Precious Opal 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 Precious Opal- SiO 2 · nH 2OGemdat.org , Management Team (2012)

Faustite and Precious Opal Specific Gravity

Another important criteria for qualitative analysis of gemstones is Faustite and Precious Opal Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Faustite and Precious Opal Optical Properties during the identification of gemstone. Specific gravity of Faustite is 1.98-2.25 whereas that of Precious Opal is 1.98-2.25.