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Pyrope
Pyrope

Demantoid
Demantoid



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Pyrope
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Demantoid

Pyrope and Demantoid Physical Properties

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Physical Properties

Tenacity

-
-

Solubility

insoluble in water
-

Durability

-
-

Specific Gravity

3.62-3.873.77-3.95
1 7.18
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Fracture

Conchoidal
-

Cleavage

None
Imperfect

Mohs Hardness

7-7.56.5
2 10
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Chemical Composition

Mg 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009)
Ca 3Fe 2(SiO 4) 3Ulrich Henn and Claudio C.

Pyrope and Demantoid Chemical Formula

While comparing Pyrope and Demantoid 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 Demantoid chemical formula.

  • Chemical formula of Pyrope- Mg 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009)
  • Chemical formula of Demantoid- Ca 3Fe 2(SiO 4) 3Ulrich Henn and Claudio C.

Pyrope and Demantoid Specific Gravity

Another important criteria for qualitative analysis of gemstones is Pyrope and Demantoid Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Pyrope and Demantoid Optical Properties during the identification of gemstone. Specific gravity of Pyrope is 3.77-3.95 whereas that of Demantoid is 3.77-3.95.