Holmquistite and Star Ruby Physical Properties

Holmquistite and Star Ruby Chemical Formula

While comparing Holmquistite 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 Holmquistite and Star Ruby chemical formula.

• Chemical formula of Holmquistite- Li 2[(Mg,Fe2+ ) 3Al 2]Si 8O 22(OH) 2Anthony et al , Handbook of mineralogy (2001)
• Chemical formula of Star Ruby- Al 2O 3Michael O’Donoghue , Gems, Sixth Edition (2006)

Holmquistite and Star Ruby Specific Gravity

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