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Pyrope
Pyrope

Diopside
Diopside



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Pyrope and Diopside Physical Properties

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1 Physical Properties
1.1 Tenacity
Not Available
Brittle
1.2 Solubility
insoluble in water
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
3.62-3.87
3.22-3.40
1.5 Fracture
Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle
Conchoidal, UnevenWalter Schumann, Gemstones of the world (2001) More from other references, Brittle, Conchoidal
1.6 Cleavage
None
Distinct/good on {110}
1.7 Mohs Hardness
7-7.5
5-6
1.8 Chemical Composition
Mg 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009)
CaMgSi2O6

Pyrope and Diopside Chemical Formula

While comparing Pyrope and Diopside 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 Diopside chemical formula.

  • Chemical formula of Pyrope- Mg 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009)
  • Chemical formula of Diopside- CaMgSi2O6

Pyrope and Diopside Specific Gravity

Another important criteria for qualitative analysis of gemstones is Pyrope and Diopside Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Pyrope and Diopside Optical Properties during the identification of gemstone. Specific gravity of Pyrope is 3.22-3.40 whereas that of Diopside is 3.22-3.40.