Wulfenite and Sapphire Physical Properties

Wulfenite

Sapphire

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

insoluble

1.3 Durability

Not Available

1.4 Specific Gravity

6.50-7.003.95-4.03

1 7.18

1.5 Fracture

Irregular, Brittle, Conchoidal

Uneven, Uneven, Gems, Sixth Edition (2006)

1.6 Cleavage

On {011}, distinct; on {001}, {013}, indistinct

None, but may exhibit parting

1.7 Mohs Hardness

2 10

1.8 Chemical Composition

PbMoO 4Walter Schumann , Gemstones of the world (2001)

Al ₂ O ₃

Wulfenite and Sapphire Chemical Formula

While comparing Wulfenite and Sapphire 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 Wulfenite and Sapphire chemical formula.

Chemical formula of Wulfenite- PbMoO 4Walter Schumann , Gemstones of the world (2001)
Chemical formula of Sapphire- Al ₂ O ₃

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Wulfenite and Sapphire Specific Gravity

Another important criteria for qualitative analysis of gemstones is Wulfenite and Sapphire Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Wulfenite and Sapphire Optical Properties during the identification of gemstone. Specific gravity of Wulfenite is 3.95-4.03 whereas that of Sapphire is 3.95-4.03.