Moldavite and Corundum Physical Properties

Moldavite

Corundum

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

insoluble

1.3 Durability

Not Available

1.4 Specific Gravity

2.32-2.383.90-4.05

1 7.18

1.5 Fracture

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

Uneven, Uneven, Gems, Difficult, Fibrous

1.6 Cleavage

Not Available

None – parting in 3 directions

1.7 Mohs Hardness

5.59

2 10

1.8 Chemical Composition

SiO 2(+Al 2O 3)Walter Schumann , Gemstones of the world (2001)

Al 2O 3Arthur Thomas , Gemstones (2009)

Moldavite and Corundum Chemical Formula

While comparing Moldavite 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 Moldavite and Corundum chemical formula.

Chemical formula of Moldavite- SiO 2(+Al 2O 3)Walter Schumann , Gemstones of the world (2001)
Chemical formula of Corundum- Al 2O 3Arthur Thomas , Gemstones (2009)

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Moldavite and Corundum Specific Gravity

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