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Umbalite
Umbalite

Gahnite
Gahnite



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Umbalite
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Gahnite

Umbalite and Gahnite Physical Properties

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1 Physical Properties
1.1 Tenacity
Not Available
Not Available
1.2 Solubility
Not Available
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
3.62-4.334.00-4.62
Amber
1 7.18
1.5 Fracture
Uneven, Uneven, ConchoidalGemdat.org, Management Team (2012)
Conchoidal, Uneven
1.6 Cleavage
Not Available
Indistinct parting on [111]
1.7 Mohs Hardness
7-7.57.5-8
Amber
2 10
1.8 Chemical Composition
Mg 3Al 2(SiO 4) 3 -Mn2+3Al 2(SiO 4) 3Gemdat.org , Management Team (2012)
ZnAl 2O 4Michael O’Donoghue , Gems, Sixth Edition (2006)

Umbalite and Gahnite Chemical Formula

While comparing Umbalite and Gahnite 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 Umbalite and Gahnite chemical formula.

  • Chemical formula of Umbalite- Mg 3Al 2(SiO 4) 3 -Mn2+3Al 2(SiO 4) 3Gemdat.org , Management Team (2012)
  • Chemical formula of Gahnite- ZnAl 2O 4Michael O’Donoghue , Gems, Sixth Edition (2006)

Umbalite and Gahnite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Umbalite and Gahnite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Umbalite and Gahnite Optical Properties during the identification of gemstone. Specific gravity of Umbalite is 4.00-4.62 whereas that of Gahnite is 4.00-4.62.