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Proustite
Proustite
☒

Umbalite
Umbalite
☒



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Proustite
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Umbalite

Proustite and Umbalite Physical Properties

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
Brittle
-
-
5.51-5.64
Uneven, Conchoidal
Distinct on {10 1 1}
2.5
Ag 3AsS 3Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references
 
-
-
-
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)

Proustite and Umbalite Chemical Formula

While comparing Proustite 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 Proustite and Umbalite chemical formula.

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Proustite and Umbalite Specific Gravity

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