Corundum and Papagoite Physical Properties

Corundum

Papagoite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

insoluble

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.90-4.053.25

1 7.18

1.5 Fracture

Uneven, Uneven, Gems, Difficult, Fibrous

Brittle, Metallic

1.6 Cleavage

None – parting in 3 directions

Imperfect in one direction

1.7 Mohs Hardness

95-5.5

2 10

1.8 Chemical Composition

Al 2O 3Arthur Thomas , Gemstones (2009)

CaCuAlSi 2O 6(OH) 3Michael OâDonoghue , Gems, Sixth Edition (2006)

Corundum and Papagoite Chemical Formula

While comparing Corundum and Papagoite 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 Papagoite chemical formula.

Chemical formula of Corundum- Al 2O 3Arthur Thomas , Gemstones (2009)
Chemical formula of Papagoite- CaCuAlSi 2O 6(OH) 3Michael OâDonoghue , Gems, Sixth Edition (2006)

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Corundum and Papagoite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Corundum and Papagoite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Corundum and Papagoite Optical Properties during the identification of gemstone. Specific gravity of Corundum is 3.25 whereas that of Papagoite is 3.25.