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Pyrope
Pyrope

Pleonast
Pleonast



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Pyrope
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Pleonast

Pyrope and Pleonast Physical Properties

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Physical Properties

Tenacity

-
-

Solubility

insoluble in water
-

Durability

-
-

Specific Gravity

3.62-3.87-9999
1 7.18
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Fracture

Conchoidal
-

Cleavage

None
Perfect

Mohs Hardness

7-7.5-9999
2 10
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Chemical Composition

Mg 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009)
MgAl2O4

Pyrope and Pleonast Chemical Formula

While comparing Pyrope and Pleonast 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 Pleonast chemical formula.

  • Chemical formula of Pyrope- Mg 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009)
  • Chemical formula of Pleonast- MgAl2O4

Pyrope and Pleonast Specific Gravity

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