Labradorite and Iolite Physical Properties

Labradorite and Iolite Chemical Formula

While comparing Labradorite 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 Labradorite and Iolite chemical formula.

• Chemical formula of Labradorite- (Na,Ca)_1-2Si_3-2O₈
• Chemical formula of Iolite- Mg₂Al₄Si₅O₁₈

Labradorite and Iolite Specific Gravity

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