Ruby and Epidote Physical Properties

Ruby

Epidote

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.97-4.053.25-3.50

1 7.18

1.5 Fracture

Conchoidal

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

1.6 Cleavage

No true cleavage

{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

Ruby and Epidote Chemical Formula

While comparing Ruby 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 Ruby and Epidote chemical formula.

Chemical formula of Ruby- 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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Ruby and Epidote Specific Gravity

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