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Corundum
Corundum

Dallasite
Dallasite



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Corundum
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Dallasite

Corundum and Dallasite Physical Properties

1 Physical Properties
1.1 Tenacity
Brittle
Not Available
1.2 Solubility
insoluble
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
3.90-4.052.58-2.91
Amber
1 7.18
1.5 Fracture
Uneven, Uneven, Gems, Difficult, Fibrous
Not Available
1.6 Cleavage
None – parting in 3 directions
Not Available
1.7 Mohs Hardness
96.5-7
Amber
2 10
1.8 Chemical Composition
Al 2O 3Arthur Thomas , Gemstones (2009)
Not Available

Corundum and Dallasite Chemical Formula

While comparing Corundum and Dallasite 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 Corundum and Dallasite chemical formula.

  • Chemical formula of Corundum- Al 2O 3Arthur Thomas , Gemstones (2009)
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Corundum and Dallasite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Corundum and Dallasite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Corundum and Dallasite Optical Properties during the identification of gemstone. Specific gravity of Corundum is 2.58-2.91 whereas that of Dallasite is 2.58-2.91.