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Sard
Sard

Andalusite
Andalusite



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Sard
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Andalusite

Sard and Andalusite Physical Properties

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
2.58-2.63
Conchoidal
None
6.5-7
SiO 2Ulrich Henn and Claudio C.
 
-
-
-
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

Sard and Andalusite Chemical Formula

While comparing Sard and Andalusite 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 Sard and Andalusite chemical formula.

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Sard and Andalusite Specific Gravity

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