Bertrandite and Wernerite Physical Properties

Bertrandite and Wernerite Chemical Formula

While comparing Bertrandite and Wernerite 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 Wernerite chemical formula.

• Chemical formula of Bertrandite- Be 4Si 2O 7(OH) 2Anthony et al , Handbook of mineralogy (2001)
• Chemical formula of Wernerite- Na 4(Al,Si) 12O 24Cl to Ca 4(Si,Al) 12O 24(CO 3,SO 4)Arthur Thomas , Gemstones (2009)

Bertrandite and Wernerite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Bertrandite and Wernerite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Bertrandite and Wernerite Optical Properties during the identification of gemstone. Specific gravity of Bertrandite is 2.50-2.80 whereas that of Wernerite is 2.50-2.80.