Ruby and Wulfenite Physical Properties

Ruby

Wulfenite

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.97-4.056.50-7.00

1 7.18

1.5 Fracture

Conchoidal

Irregular, Brittle, Conchoidal

1.6 Cleavage

No true cleavage

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

1.7 Mohs Hardness

2 10

1.8 Chemical Composition

Al ₂ O ₃

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

Ruby and Wulfenite Chemical Formula

While comparing Ruby and Wulfenite 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 Ruby and Wulfenite chemical formula.

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

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Ruby and Wulfenite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Ruby and Wulfenite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Ruby and Wulfenite Optical Properties during the identification of gemstone. Specific gravity of Ruby is 6.50-7.00 whereas that of Wulfenite is 6.50-7.00.