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Ettringite
Ettringite

Pyrope
Pyrope



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Ettringite
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Pyrope

Ettringite and Pyrope Physical Properties

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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
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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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insoluble in water
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3.62-3.87
Conchoidal
None
7-7.5
Mg 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009)

Ettringite and Pyrope Chemical Formula

While comparing Ettringite and Pyrope 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 Pyrope chemical formula.

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Ettringite and Pyrope Specific Gravity

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