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Jet
Jet

Augelite
Augelite



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Jet
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Augelite

Jet and Augelite Physical Properties

Jet
Jet
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Physical Properties

Tenacity

-
-

Solubility

-
-

Durability

-
-

Specific Gravity

1.19-1.352.70-2.75
1 7.18
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Fracture

ConchoidalWalter Schumann
Conchoidal

Cleavage

None
From the Greek for luster, for its pearly luster on the cleavage.

Mohs Hardness

2.5-44.5-5
2 10
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Chemical Composition

C
Al 2(PO 4)(OH) 3Michael O’Donoghue , Gems, Sixth Edition (2006)

Jet and Augelite Chemical Formula

While comparing Jet and Augelite 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 Jet and Augelite chemical formula.

  • Chemical formula of Jet- C
  • Chemical formula of Augelite- Al 2(PO 4)(OH) 3Michael O’Donoghue , Gems, Sixth Edition (2006)

Jet and Augelite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Jet and Augelite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Jet and Augelite Optical Properties during the identification of gemstone. Specific gravity of Jet is 2.70-2.75 whereas that of Augelite is 2.70-2.75.