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Pearl
Pearl

Augelite
Augelite



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Pearl
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Augelite

Pearl and Augelite Physical Properties

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Physical Properties

Tenacity

-
-

Solubility

-
-

Durability

-
-

Specific Gravity

2.60-2.852.70-2.75
1 7.18
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Fracture

-
Conchoidal

Cleavage

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

Mohs Hardness

2.5-4.54.5-5
2 10
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Chemical Composition

CaCO3
Al 2(PO 4)(OH) 3Michael O’Donoghue , Gems, Sixth Edition (2006)

Pearl and Augelite Chemical Formula

While comparing Pearl 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 Pearl and Augelite chemical formula.

  • Chemical formula of Pearl- CaCO3
  • Chemical formula of Augelite- Al 2(PO 4)(OH) 3Michael O’Donoghue , Gems, Sixth Edition (2006)

Pearl and Augelite Specific Gravity

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