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Precious coral
Precious coral
☒

Andalusite
Andalusite
☒



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Precious coral
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Andalusite

Precious coral and Andalusite Physical Properties

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
-9999
-
None
3.5
CaCO3
 
-
-
-
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

Precious coral and Andalusite Chemical Formula

While comparing Precious coral 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 Precious coral and Andalusite chemical formula.

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Precious coral and Andalusite Specific Gravity

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