Corundum and Euclase Physical Properties

Corundum

Euclase

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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

3.90-4.053.08-3.12

1 7.18

1.5 Fracture

Uneven, Uneven, Gems, Difficult, Fibrous

ConchoidalWalter Schumann, Gemstones of the world (2001), ConchoidalWalter Schumann, Gemstones of the world (2001), Brittle, Metallic

1.6 Cleavage

None – parting in 3 directions

{010} Perfect

1.7 Mohs Hardness

97.5

2 10

1.8 Chemical Composition

Al 2O 3Arthur Thomas , Gemstones (2009)

BeAlSiO 4(OH)Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Corundum and Euclase Chemical Formula

While comparing Corundum and Euclase 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 Euclase chemical formula.

Chemical formula of Corundum- Al 2O 3Arthur Thomas , Gemstones (2009)
Chemical formula of Euclase- BeAlSiO 4(OH)Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Corundum and Euclase Specific Gravity

Another important criteria for qualitative analysis of gemstones is Corundum and Euclase Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Corundum and Euclase Optical Properties during the identification of gemstone. Specific gravity of Corundum is 3.08-3.12 whereas that of Euclase is 3.08-3.12.