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Pyrope
Pyrope

Iolite
Iolite



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Pyrope
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Iolite

Pyrope and Iolite Physical Properties

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1 Physical Properties
1.1 Tenacity
Not Available
Not Available
1.2 Solubility
insoluble in water
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
3.62-3.872.6-2.7
Amber
1 7.18
1.5 Fracture
Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle
Not Available
1.6 Cleavage
None
3,1
1.7 Mohs Hardness
7-7.57-7.5
Amber
2 10
1.8 Chemical Composition
Mg 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009)
Mg2Al4Si5O18

Pyrope and Iolite Chemical Formula

While comparing Pyrope and Iolite 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 Iolite chemical formula.

  • Chemical formula of Pyrope- Mg 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009)
  • Chemical formula of Iolite- Mg2Al4Si5O18

Pyrope and Iolite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Pyrope and Iolite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Pyrope and Iolite Optical Properties during the identification of gemstone. Specific gravity of Pyrope is 2.6-2.7 whereas that of Iolite is 2.6-2.7.