Hiddenite and Polyhalite Physical Properties

Hiddenite

Polyhalite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

Soluble

1.3 Durability

Not Available

1.4 Specific Gravity

3.15-3.212.78

1 7.18

1.5 Fracture

Gemstones of the world (2001), UnevenWalter Schumann, Gemstones of the world (2001)

Conchoidal, Brittle

1.6 Cleavage

1,2 prismatic

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

1.7 Mohs Hardness

6-73.5

2 10

1.8 Chemical Composition

LiAlSi₂O₆

Not Available

Hiddenite and Polyhalite Chemical Formula

While comparing Hiddenite 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 Hiddenite and Polyhalite chemical formula.

Chemical formula of Hiddenite- LiAlSi₂O₆

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Hiddenite and Polyhalite Specific Gravity

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