Corundum and Wardite Physical Properties

Corundum

Wardite

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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

3.90-4.052.81

1 7.18

1.5 Fracture

Uneven, Uneven, Gems, Difficult, Fibrous

ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)

1.6 Cleavage

None – parting in 3 directions

{001} Perfect

1.7 Mohs Hardness

94.5-5

2 10

1.8 Chemical Composition

Al 2O 3Arthur Thomas , Gemstones (2009)

NaAl 3(PO 4) 2(OH) 4 · 2H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Corundum and Wardite Chemical Formula

While comparing Corundum and Wardite 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 Wardite chemical formula.

Chemical formula of Corundum- Al 2O 3Arthur Thomas , Gemstones (2009)
Chemical formula of Wardite- NaAl 3(PO 4) 2(OH) 4 · 2H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Corundum and Wardite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Corundum and Wardite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Corundum and Wardite Optical Properties during the identification of gemstone. Specific gravity of Corundum is 2.81 whereas that of Wardite is 2.81.