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Brazilianite
Brazilianite

Blue John
Blue John



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Brazilianite
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Blue John

Brazilianite and Blue John Physical Properties

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
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
 
-
-
-
3.00-3.25
-
Perfect
-9999
CaF 2Michael O’Donoghue , Gems, Sixth Edition (2006)

Brazilianite and Blue John Chemical Formula

While comparing Brazilianite and Blue John 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 Brazilianite and Blue John chemical formula.

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Brazilianite and Blue John Specific Gravity

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