Bertrandite and Sard Physical Properties

Bertrandite and Sard Chemical Formula

While comparing Bertrandite and Sard 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 Bertrandite and Sard chemical formula.

• Chemical formula of Bertrandite- Be 4Si 2O 7(OH) 2Anthony et al , Handbook of mineralogy (2001)
• Chemical formula of Sard- SiO 2Ulrich Henn and Claudio C.

Bertrandite and Sard Specific Gravity

Another important criteria for qualitative analysis of gemstones is Bertrandite and Sard Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Bertrandite and Sard Optical Properties during the identification of gemstone. Specific gravity of Bertrandite is 2.58-2.63 whereas that of Sard is 2.58-2.63.