Charoite and Lapis lazuli Physical Properties

Charoite and Lapis lazuli Chemical Formula

While comparing Charoite and Lapis lazuli 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 Charoite and Lapis lazuli chemical formula.

• Chemical formula of Charoite- K(Ca,Na) 2Si 4O 10(OH,F) · H 2OMichael O’Donoghue , Gems, Sixth Edition (2006) More from other references
• Chemical formula of Lapis lazuli- The chief constituent Lapis Lazuli is Lazurite, with the following chemical formula: (Na,Ca)₈Al₆Si₆O₂₄(S,SO)₄

Charoite and Lapis lazuli Specific Gravity

Another important criteria for qualitative analysis of gemstones is Charoite and Lapis lazuli Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Charoite and Lapis lazuli Optical Properties during the identification of gemstone. Specific gravity of Charoite is 2.50-3.00 whereas that of Lapis lazuli is 2.50-3.00.