Amethyst and Vlasovite Physical Properties

Amethyst

Vlasovite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

insoluble in common solvents

Nearly insoluble in HCl and HNO₃

1.3 Durability

Not Available

1.4 Specific Gravity

2.652.97

1 7.18

1.5 Fracture

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

Conchoidal, Brittle

1.6 Cleavage

Indiscernible

Distinct on {010}

1.7 Mohs Hardness

2 10

1.8 Chemical Composition

SiO₂

Not Available

Amethyst and Vlasovite Chemical Formula

While comparing Amethyst and Vlasovite 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 Amethyst and Vlasovite chemical formula.

Chemical formula of Amethyst- SiO₂

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Amethyst and Vlasovite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Amethyst and Vlasovite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Amethyst and Vlasovite Optical Properties during the identification of gemstone. Specific gravity of Amethyst is 2.97 whereas that of Vlasovite is 2.97.