Ruby and Sard Physical Properties

Ruby

Sard

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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

3.97-4.052.58-2.63

1 7.18

1.5 Fracture

Conchoidal

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

1.6 Cleavage

No true cleavage

Not Available

1.7 Mohs Hardness

96.5-7

2 10

2.5 Chemical Composition

Al ₂ O ₃

SiO 2Ulrich Henn and Claudio C.

Ruby and Sard Chemical Formula

While comparing Ruby and Sard 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 Sard chemical formula.

Chemical formula of Ruby- Al ₂ O ₃
Chemical formula of Sard- SiO 2Ulrich Henn and Claudio C.

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Ruby and Sard Specific Gravity

Another important criteria for qualitative analysis of gemstones is Ruby and Sard Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Ruby and Sard Optical Properties during the identification of gemstone. Specific gravity of Ruby is 2.58-2.63 whereas that of Sard is 2.58-2.63.