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Agate
Agate

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Corundum



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Agate and Corundum Physical Properties

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1 Physical Properties
1.1 Tenacity
Not Available
Brittle
1.2 Solubility
Not Available
insoluble
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
2.60-2.64
3.90-4.05
1.5 Fracture
Conchoidal, UnevenWalter Schumann, Gemstones of the world (2001)
Uneven, Uneven, Gems, Difficult, Fibrous
1.6 Cleavage
Indiscernible
None – parting in 3 directions
1.7 Mohs Hardness
6.5-7
9
1.8 Chemical Composition
SiO2
Al 2O 3Arthur Thomas , Gemstones (2009)

Agate and Corundum Chemical Formula

While comparing Agate and Corundum 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 Agate and Corundum chemical formula.

  • Chemical formula of Agate- SiO2
  • Chemical formula of Corundum- Al 2O 3Arthur Thomas , Gemstones (2009)

Agate and Corundum Specific Gravity

Another important criteria for qualitative analysis of gemstones is Agate and Corundum Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Agate and Corundum Optical Properties during the identification of gemstone. Specific gravity of Agate is 3.90-4.05 whereas that of Corundum is 3.90-4.05.