Milk Opal and Polyhalite Physical Properties

Milk Opal and Polyhalite Chemical Formula

While comparing Milk Opal and Polyhalite 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 Milk Opal and Polyhalite chemical formula.

• Chemical formula of Milk Opal- SiO2·nH2O
• Chemical formula of Polyhalite- K2Ca2Mg(SO4)4·2H2O

Milk Opal and Polyhalite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Milk Opal and Polyhalite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Milk Opal and Polyhalite Optical Properties during the identification of gemstone. Specific gravity of Milk Opal is 2.78 whereas that of Polyhalite is 2.78.