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Pyrope
Pyrope

Vivianite
Vivianite



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Pyrope
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Vivianite

Pyrope and Vivianite 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
3.62-3.872.64-2.70
Amber
1 7.18
1.5 Fracture
Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle
(e.g. graphite).
1.6 Cleavage
None
{010} Perfect
1.7 Mohs Hardness
7-7.5Not Available
Amber
2 10
1.8 Chemical Composition
Mg 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009)
Fe 3(PO 4) 2 8H 2OUlrich Henn and Claudio C.

Pyrope and Vivianite Chemical Formula

While comparing Pyrope and Vivianite 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 Vivianite chemical formula.

  • Chemical formula of Pyrope- Mg 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009)
  • Chemical formula of Vivianite- Fe 3(PO 4) 2 8H 2OUlrich Henn and Claudio C.

Pyrope and Vivianite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Pyrope and Vivianite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Pyrope and Vivianite Optical Properties during the identification of gemstone. Specific gravity of Pyrope is 2.64-2.70 whereas that of Vivianite is 2.64-2.70.