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Rosasite
Rosasite

Umbalite
Umbalite



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Rosasite
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Umbalite

Rosasite and Umbalite Physical Properties

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1 Physical Properties
1.1 Tenacity
Brittle
Not Available
1.2 Solubility
Effervesces in cold
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
4-4.23.62-4.33
Amber
1 7.18
1.5 Fracture
Splintery
Uneven, Uneven, ConchoidalGemdat.org, Management Team (2012)
1.6 Cleavage
Perfect on {100} and {010}
Not Available
1.7 Mohs Hardness
47-7.5
Amber
2 10
1.8 Chemical Composition
Not Available
Mg 3Al 2(SiO 4) 3 -Mn2+3Al 2(SiO 4) 3Gemdat.org , Management Team (2012)

Rosasite and Umbalite Chemical Formula

While comparing Rosasite 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 Rosasite and Umbalite chemical formula.

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  • Chemical formula of Umbalite- Mg 3Al 2(SiO 4) 3 -Mn2+3Al 2(SiO 4) 3Gemdat.org , Management Team (2012)

Rosasite and Umbalite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Rosasite and Umbalite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Rosasite and Umbalite Optical Properties during the identification of gemstone. Specific gravity of Rosasite is 3.62-4.33 whereas that of Umbalite is 3.62-4.33.