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Ettringite
Ettringite

Dumortierite
Dumortierite



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Ettringite
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Dumortierite

Ettringite and Dumortierite Physical Properties

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
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Partially soluble in water
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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)
 
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-
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3.26-3.41
Fibrous, ConchoidalWalter Schumann
Distinct on {100}, poor on {110}; parting on {001}
7-8.5
AlAl6O3BSi3O18

Ettringite and Dumortierite Chemical Formula

While comparing Ettringite and Dumortierite 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 Dumortierite chemical formula.

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Ettringite and Dumortierite Specific Gravity

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