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Pyrope
Pyrope

Aragonite
Aragonite



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Pyrope
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Aragonite

Pyrope and Aragonite Physical Properties

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Physical Properties

Tenacity

-
Brittle

Solubility

insoluble in water
Dilute acid

Durability

-
-

Specific Gravity

3.62-3.872.93-2.96
1 7.18
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Fracture

Conchoidal
Subconchoidal, Conchoidal

Cleavage

None
Distinct on {010}, imperfect {110} and {011}

Mohs Hardness

7-7.53.5-4
2 10
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Chemical Composition

Mg 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009)
CaCO 3Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Pyrope and Aragonite Chemical Formula

While comparing Pyrope and Aragonite 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 Pyrope and Aragonite chemical formula.

  • Chemical formula of Pyrope- Mg 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009)
  • Chemical formula of Aragonite- CaCO 3Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Pyrope and Aragonite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Pyrope and Aragonite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Pyrope and Aragonite Optical Properties during the identification of gemstone. Specific gravity of Pyrope is 2.93-2.96 whereas that of Aragonite is 2.93-2.96.