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Andalusite
Andalusite
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Brazilianite
Brazilianite
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Andalusite
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Brazilianite

Andalusite and Brazilianite 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
 
-
-
-
2.98-2.99
Conchoidal
(010) Distinct to good
5.5
NaAl 3(PO 4) 2(OH) 4Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Andalusite and Brazilianite Chemical Formula

While comparing Andalusite and Brazilianite 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 Brazilianite chemical formula.

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Andalusite and Brazilianite Specific Gravity

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