Chromite and Amethyst Physical Properties

Chromite

Amethyst

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

insoluble in common solvents

1.3 Durability

Not Available

1.4 Specific Gravity

4.5-4.82.65

1 7.18

1.5 Fracture

Uneven

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

1.6 Cleavage

None, parting may develop along {111}

Indiscernible

1.7 Mohs Hardness

5.57

2 10

1.8 Chemical Composition

Fe++Cr2O4

SiO₂

Chromite and Amethyst Chemical Formula

While comparing Chromite 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 Chromite and Amethyst chemical formula.

Chemical formula of Chromite- Fe++Cr2O4
Chemical formula of Amethyst- SiO₂

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Chromite and Amethyst Specific Gravity

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