Holmquistite and Iolite Physical Properties

Holmquistite and Iolite Chemical Formula

While comparing Holmquistite and Iolite 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 Iolite 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 Iolite- Mg₂Al₄Si₅O₁₈

Holmquistite and Iolite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Holmquistite and Iolite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Holmquistite and Iolite Optical Properties during the identification of gemstone. Specific gravity of Holmquistite is 2.6-2.7 whereas that of Iolite is 2.6-2.7.