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Polyhalite
Polyhalite

Amethyst
Amethyst



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Polyhalite
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Amethyst

Polyhalite and Amethyst Physical Properties

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
Brittle
Soluble
-
2.78
Conchoidal
Perfect on {10 1 }; parting on {010}
3.5
K2Ca2Mg(SO4)4·2H2O
 
-
insoluble in common solvents
-
2.65
Conchoidal, ConchoidalWalter Schumann
Indiscernible
7
SiO2

Polyhalite and Amethyst Chemical Formula

While comparing Polyhalite and Amethyst 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 Amethyst chemical formula.

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Polyhalite and Amethyst Specific Gravity

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