Ruby and Chalcedony Physical Properties

Ruby

Chalcedony

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

Soluble

1.3 Durability

Not Available

1.4 Specific Gravity

3.97-4.052.55-2.70

1 7.18

1.5 Fracture

Conchoidal

Uneven, Splintery, Conchoidal, Uneven, Splintery, Conchoidal, UnevenWalter Schumann

1.6 Cleavage

No true cleavage

Absent

1.7 Mohs Hardness

96.5-7

2 10

1.8 Chemical Composition

Al ₂ O ₃

SiO₂

Ruby and Chalcedony Chemical Formula

While comparing Ruby and Chalcedony 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 Chalcedony chemical formula.

Chemical formula of Ruby- Al ₂ O ₃
Chemical formula of Chalcedony- SiO₂

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Ruby and Chalcedony Specific Gravity

Another important criteria for qualitative analysis of gemstones is Ruby and Chalcedony Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Ruby and Chalcedony Optical Properties during the identification of gemstone. Specific gravity of Ruby is 2.55-2.70 whereas that of Chalcedony is 2.55-2.70.