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Ettringite
Ettringite

Demantoid
Demantoid



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Ettringite
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Demantoid

Ettringite and Demantoid Physical Properties

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
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Partially soluble in water
-
1.77
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Perfect on {10 1 0}
2-2.5
Ca 6Al 2(SO 4) 3(OH) 12 26H 2OMichael O’Donoghue , Gems, Sixth Edition (2006)
 
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-
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3.77-3.95
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Imperfect
6.5
Ca 3Fe 2(SiO 4) 3Ulrich Henn and Claudio C.

Ettringite and Demantoid Chemical Formula

While comparing Ettringite and Demantoid 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 Demantoid chemical formula.

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Ettringite and Demantoid Specific Gravity

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