Omphacite and Amethyst Physical Properties

Omphacite

Amethyst

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

insoluble in common solvents

1.3 Durability

Not Available

1.4 Specific Gravity

3.16-3.43

2.65

1.5 Fracture

Uneven, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle, Conchoidal

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

1.6 Cleavage

{110} Good, {110} Good

Indiscernible

1.7 Mohs Hardness

5-6

1.8 Chemical Composition

(Ca,Na)(Mg,Fe,Al)Si 2O 6Anthony et al , Handbook of Mineralogy (2001)

SiO₂

Omphacite and Amethyst Chemical Formula

While comparing Omphacite 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 Omphacite and Amethyst chemical formula.

Chemical formula of Omphacite- (Ca,Na)(Mg,Fe,Al)Si 2O 6Anthony et al , Handbook of Mineralogy (2001)
Chemical formula of Amethyst- SiO₂

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Omphacite and Amethyst Specific Gravity

Another important criteria for qualitative analysis of gemstones is Omphacite and Amethyst Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Omphacite and Amethyst Optical Properties during the identification of gemstone. Specific gravity of Omphacite is 2.65 whereas that of Amethyst is 2.65.