Ruby and Moissanite Physical Properties

Ruby

Moissanite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

none

1.3 Durability

Not Available

1.4 Specific Gravity

3.97-4.053.17-3.24

1 7.18

1.5 Fracture

Conchoidal

Conchoidal, ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle

1.6 Cleavage

No true cleavage

(0001) indistinct

1.7 Mohs Hardness

99-9.5

2 10

1.8 Chemical Composition

Al ₂ O ₃

SiCArthur Thomas , Gemstones (2009)

Ruby and Moissanite Chemical Formula

While comparing Ruby and Moissanite 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 Moissanite chemical formula.

Chemical formula of Ruby- Al ₂ O ₃
Chemical formula of Moissanite- SiCArthur Thomas , Gemstones (2009)

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Ruby and Moissanite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Ruby and Moissanite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Ruby and Moissanite Optical Properties during the identification of gemstone. Specific gravity of Ruby is 3.17-3.24 whereas that of Moissanite is 3.17-3.24.