Polyhalite and Agate Physical Properties

Polyhalite

Agate

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Soluble

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.782.60-2.64

1 7.18

1.5 Fracture

Conchoidal, Brittle

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

1.6 Cleavage

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

Indiscernible

1.7 Mohs Hardness

3.56.5-7

2 10

1.8 Chemical Composition

Not Available

SiO₂

Polyhalite and Agate Chemical Formula

While comparing Polyhalite and Agate 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 Agate chemical formula.

Chemical formula of Agate- SiO₂

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Polyhalite and Agate Specific Gravity

Another important criteria for qualitative analysis of gemstones is Polyhalite and Agate Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Polyhalite and Agate Optical Properties during the identification of gemstone. Specific gravity of Polyhalite is 2.60-2.64 whereas that of Agate is 2.60-2.64.