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Demantoid
Demantoid

Ettringite
Ettringite



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Demantoid
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Ettringite

Demantoid and Ettringite Physical Properties

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
3.77-3.95
-
Imperfect
6.5
Ca 3Fe 2(SiO 4) 3Ulrich Henn and Claudio C.
 
-
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)

Demantoid and Ettringite Chemical Formula

While comparing Demantoid 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 Demantoid and Ettringite chemical formula.

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Demantoid and Ettringite Specific Gravity

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