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Tourmaline
Tourmaline

Pyrope
Pyrope



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Tourmaline
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Pyrope

Tourmaline and Pyrope Physical Properties

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
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-
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2.85-3.35
Uneven, Conchoidal
Indistinct
7-7.5
Tourmaline is a series of several different minerals with unique chemical formulas. See The chemical formula of Tourmaline for details.
 
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insoluble in water
-
3.62-3.87
Conchoidal
None
7-7.5
Mg 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009)

Tourmaline and Pyrope Chemical Formula

While comparing Tourmaline 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 Tourmaline and Pyrope chemical formula.

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Tourmaline and Pyrope Specific Gravity

Another important criteria for qualitative analysis of gemstones is Tourmaline and Pyrope Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Tourmaline Vs Pyrope during the identification of gemstone. Specific gravity of Tourmaline is whereas that of Pyrope is .