Amethyst and Piemontite Physical Properties

Amethyst

Piemontite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

insoluble in common solvents

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.65Not Available

1 7.18

1.5 Fracture

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

Uneven, Splintery

1.6 Cleavage

Indiscernible

[001] good, [100] distinct

1.7 Mohs Hardness

76-6.5

2 10

1.8 Chemical Composition

SiO₂

Not Available

Amethyst and Piemontite Chemical Formula

While comparing Amethyst and Piemontite 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 Piemontite chemical formula.

Chemical formula of Amethyst- SiO₂

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Amethyst and Piemontite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Amethyst and Piemontite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Amethyst and Piemontite Optical Properties during the identification of gemstone. Specific gravity of Amethyst is Not Available whereas that of Piemontite is Not Available.