Polyhalite and Star Sapphire Physical Properties

Polyhalite and Star Sapphire Chemical Formula

While comparing Polyhalite and Star Sapphire 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 Polyhalite and Star Sapphire chemical formula.

• Chemical formula of Polyhalite- K2Ca2Mg(SO4)4·2H2O
• Chemical formula of Star Sapphire- Al 2O 3Ulrich Henn and Claudio C.

Polyhalite and Star Sapphire Specific Gravity

Another important criteria for qualitative analysis of gemstones is Polyhalite and Star Sapphire Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Polyhalite and Star Sapphire Optical Properties during the identification of gemstone. Specific gravity of Polyhalite is 3.90-4.05 whereas that of Star Sapphire is 3.90-4.05.