Diopside and Polyhalite Physical Properties

Diopside

Polyhalite

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Not Available

Soluble

1.3 Durability

Not Available

1.4 Specific Gravity

3.22-3.402.78

1 7.18

1.5 Fracture

Conchoidal, UnevenWalter Schumann, Gemstones of the world (2001) More from other references, Brittle, Conchoidal

Conchoidal, Brittle

1.6 Cleavage

Distinct/good on {110}

Perfect on {10 1 }; parting on {010}

1.7 Mohs Hardness

5-63.5

2 10

1.8 Chemical Composition

CaMgSi₂O₆

Not Available

Diopside and Polyhalite Chemical Formula

While comparing Diopside 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 Diopside and Polyhalite chemical formula.

Chemical formula of Diopside- CaMgSi₂O₆

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Diopside and Polyhalite Specific Gravity

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