Ruby and Emerald Physical Properties

Ruby

Emerald

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

Hard

1.4 Specific Gravity

3.97-4.052.67-2.78

1 7.18

1.5 Fracture

Conchoidal

Uneven, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001)

1.6 Cleavage

No true cleavage

Imperfect on the [0001]

1.7 Mohs Hardness

97.5-8

2 10

1.8 Chemical Composition

Al ₂ O ₃

Be₃Al₂SiO₆

Ruby and Emerald Chemical Formula

While comparing Ruby and Emerald 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 Emerald chemical formula.

Chemical formula of Ruby- Al ₂ O ₃
Chemical formula of Emerald- Be₃Al₂SiO₆

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Ruby and Emerald Specific Gravity

Another important criteria for qualitative analysis of gemstones is Ruby and Emerald Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Ruby and Emerald Optical Properties during the identification of gemstone. Specific gravity of Ruby is 2.67-2.78 whereas that of Emerald is 2.67-2.78.