Sapphire and Epidote Physical Properties

Sapphire

Epidote

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

insoluble

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.95-4.033.25-3.50

1 7.18

1.5 Fracture

Uneven, Uneven, Gems, Sixth Edition (2006)

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

1.6 Cleavage

None, but may exhibit parting

{001} perfect and {100} imperfect

1.7 Mohs Hardness

96-7

2 10

1.8 Chemical Composition

Al ₂ O ₃

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

Sapphire and Epidote Chemical Formula

While comparing Sapphire 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 Sapphire and Epidote chemical formula.

Chemical formula of Sapphire- Al ₂ O ₃
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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Sapphire and Epidote Specific Gravity

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