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Andalusite
Andalusite

Pyrope
Pyrope



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Andalusite
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Pyrope

Andalusite 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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-
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3.05-3.21
Uneven, Subconchoidal, Splintery
Good on {110}, poor on {100}
7.5
Al 2SiO 5Michael O’Donoghue , Gems, Sixth edition (2006) More from other references
 
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insoluble in water
-
3.62-3.87
Conchoidal
None
7-7.5
Mg 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009)

Andalusite and Pyrope Chemical Formula

While comparing Andalusite 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 Andalusite and Pyrope chemical formula.

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Andalusite and Pyrope Specific Gravity

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