Dolomite and Amethyst Physical Properties

Dolomite

Amethyst

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Poorly soluble in dilute HCl

insoluble in common solvents

1.3 Durability

Not Available

1.4 Specific Gravity

2.80-2.952.65

1 7.18

1.5 Fracture

Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle, Conchoidal

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

1.6 Cleavage

Perfect on {10 1 1}, rhombohedral cleavage

Indiscernible

1.7 Mohs Hardness

3.5-47

2 10

1.8 Chemical Composition

CaMg(CO 3) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

SiO₂

Dolomite and Amethyst Chemical Formula

While comparing Dolomite 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 Dolomite and Amethyst chemical formula.

Chemical formula of Dolomite- CaMg(CO 3) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Amethyst- SiO₂

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Dolomite and Amethyst Specific Gravity

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