Zoisite and Star Ruby Physical Properties

Zoisite and Star Ruby Chemical Formula

While comparing Zoisite and Star Ruby 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 Zoisite and Star Ruby chemical formula.

• Chemical formula of Zoisite- Ca₂Al₃(SiO₄)₃(OH)
• Chemical formula of Star Ruby- Al 2O 3Michael O’Donoghue , Gems, Sixth Edition (2006)

Zoisite and Star Ruby Specific Gravity

Another important criteria for qualitative analysis of gemstones is Zoisite and Star Ruby Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Zoisite and Star Ruby Optical Properties during the identification of gemstone. Specific gravity of Zoisite is 3.95-4.10 whereas that of Star Ruby is 3.95-4.10.