Amethyst and Epidote Physical Properties

Amethyst

Epidote

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

insoluble in common solvents

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.653.25-3.50

1 7.18

1.5 Fracture

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

Conchoidal, Conchoidal, Gemstones of the world (2001) More from other references, Fibrous

1.6 Cleavage

Indiscernible

{001} perfect and {100} imperfect

1.7 Mohs Hardness

76-7

2 10

1.8 Chemical Composition

SiO₂

CaAl 2(Fe3+ ,Al)Si 3O 12(OH)Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Amethyst and Epidote Chemical Formula

While comparing Amethyst and Epidote 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 Epidote chemical formula.

Chemical formula of Amethyst- SiO₂
Chemical formula of Epidote- CaAl 2(Fe3+ ,Al)Si 3O 12(OH)Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Amethyst and Epidote Specific Gravity

Another important criteria for qualitative analysis of gemstones is Amethyst and Epidote Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Amethyst and Epidote Optical Properties during the identification of gemstone. Specific gravity of Amethyst is 3.25-3.50 whereas that of Epidote is 3.25-3.50.