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Ettringite
Ettringite

Star Sapphire
Star Sapphire



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Ettringite
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Star Sapphire

Ettringite and Star Sapphire Physical Properties

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
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)
 
-
-
-
3.90-4.05
-
None
-9999
Al 2O 3Ulrich Henn and Claudio C.

Ettringite and Star Sapphire Chemical Formula

While comparing Ettringite and Star Sapphire 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 Ettringite and Star Sapphire chemical formula.

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Ettringite and Star Sapphire Specific Gravity

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