Ruby and Pearl Physical Properties

Ruby

Pearl

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.97-4.052.60-2.85

1 7.18

1.5 Fracture

Conchoidal

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

1.6 Cleavage

No true cleavage

none

1.7 Mohs Hardness

92.5-4.5

2 10

1.8 Chemical Composition

Al ₂ O ₃

Not Available

Ruby and Pearl Chemical Formula

While comparing Ruby and Pearl 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 Pearl chemical formula.

Chemical formula of Ruby- Al ₂ O ₃

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Ruby and Pearl Specific Gravity

Another important criteria for qualitative analysis of gemstones is Ruby and Pearl Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Ruby and Pearl Optical Properties during the identification of gemstone. Specific gravity of Ruby is 2.60-2.85 whereas that of Pearl is 2.60-2.85.