Corundum and Vivianite Physical Properties

Corundum

Vivianite

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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

3.90-4.052.64-2.70

1 7.18

1.5 Fracture

Uneven, Uneven, Gems, Difficult, Fibrous

(e.g. graphite).

1.6 Cleavage

None – parting in 3 directions

{010} Perfect

1.7 Mohs Hardness

9Not Available

2 10

1.8 Chemical Composition

Al 2O 3Arthur Thomas , Gemstones (2009)

Fe 3(PO 4) 2 8H 2OUlrich Henn and Claudio C.

Corundum and Vivianite Chemical Formula

While comparing Corundum and Vivianite 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 Vivianite chemical formula.

Chemical formula of Corundum- Al 2O 3Arthur Thomas , Gemstones (2009)
Chemical formula of Vivianite- Fe 3(PO 4) 2 8H 2OUlrich Henn and Claudio C.

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Corundum and Vivianite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Corundum and Vivianite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Corundum and Vivianite Optical Properties during the identification of gemstone. Specific gravity of Corundum is 2.64-2.70 whereas that of Vivianite is 2.64-2.70.