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Jet
Jet

Umbalite
Umbalite



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Jet
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Umbalite

Jet and Umbalite Physical Properties

Jet
Jet
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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
1.19-1.35
ConchoidalWalter Schumann
None
2.5-4
C
 
-
-
-
3.62-4.33
Uneven
Indiscernible
7-7.5
Mg 3Al 2(SiO 4) 3 -Mn2+3Al 2(SiO 4) 3Gemdat.org , Management Team (2012)

Jet and Umbalite Chemical Formula

While comparing Jet and Umbalite 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 Jet and Umbalite chemical formula.

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Jet and Umbalite Specific Gravity

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