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Chalcedony
Chalcedony

Pyrope
Pyrope



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Chalcedony
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Pyrope

Chalcedony and Pyrope Physical Properties

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Physical Properties

Tenacity

-
-

Solubility

Soluble
insoluble in water

Durability

-
-

Specific Gravity

2.55-2.703.62-3.87
1 7.18
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Fracture

Uneven, Splintery, Conchoidal
Conchoidal

Cleavage

Absent
None

Mohs Hardness

6.5-77-7.5
2 10
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Chemical Composition

SiO2
Mg 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009)

Chalcedony and Pyrope Chemical Formula

While comparing Chalcedony and Pyrope 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 Chalcedony and Pyrope chemical formula.

  • Chemical formula of Chalcedony- SiO2
  • Chemical formula of Pyrope- Mg 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009)

Chalcedony and Pyrope Specific Gravity

Another important criteria for qualitative analysis of gemstones is Chalcedony and Pyrope Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Chalcedony and Pyrope Optical Properties during the identification of gemstone. Specific gravity of Chalcedony is 3.62-3.87 whereas that of Pyrope is 3.62-3.87.