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Ruby
Ruby

Ettringite
Ettringite



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Ruby
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Ettringite

Ruby and Ettringite Physical Properties

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
Brittle
-
-
3.97-4.05
Conchoidal
No true cleavage
9
Al 2 O 3
 
-
Partially soluble in water
-
1.77
-
Perfect on {10 1 0}
2-2.5
Ca 6Al 2(SO 4) 3(OH) 12 26H 2OMichael O’Donoghue , Gems, Sixth Edition (2006)

Ruby and Ettringite Chemical Formula

While comparing Ruby and Ettringite 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 Ettringite chemical formula.

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Ruby and Ettringite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Ruby and Ettringite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Ruby Vs Ettringite during the identification of gemstone. Specific gravity of Ruby is whereas that of Ettringite is .