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Andalusite
Andalusite

Chalcedony
Chalcedony



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Andalusite
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Chalcedony

Andalusite and Chalcedony Physical Properties

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
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
 
-
Soluble
-
2.55-2.70
Uneven, Splintery, Conchoidal
Absent
6.5-7
SiO2

Andalusite and Chalcedony Chemical Formula

While comparing Andalusite and Chalcedony 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 Chalcedony chemical formula.

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Andalusite and Chalcedony Specific Gravity

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