Pyrope and Lapis lazuli Physical Properties

Pyrope and Lapis lazuli Chemical Formula

While comparing Pyrope 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 Pyrope and Lapis lazuli chemical formula.

• Chemical formula of Pyrope- Mg 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009)
• Chemical formula of Lapis lazuli- The chief constituent Lapis Lazuli is Lazurite, with the following chemical formula: (Na,Ca)₈Al₆Si₆O₂₄(S,SO)₄

Pyrope and Lapis lazuli Specific Gravity

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