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Blue spinel
Blue spinel

Ettringite
Ettringite



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Blue spinel
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Ettringite

Blue spinel and Ettringite Physical Properties

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
-9999
-
None
-9999
MgAl2O4
 
-
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)

Blue spinel and Ettringite Chemical Formula

While comparing Blue spinel 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 Blue spinel and Ettringite chemical formula.

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Blue spinel and Ettringite Specific Gravity

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