Ruby and Marcasite Physical Properties

Ruby

Marcasite

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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

3.97-4.054.80-4.90

1 7.18

1.5 Fracture

Conchoidal

UnevenArthur Thomas, Gemstones (2009), UnevenArthur Thomas, Gemstones (2009), Uneven

1.6 Cleavage

No true cleavage

{010} Indistinct

1.7 Mohs Hardness

96-6.5

2 10

1.8 Chemical Composition

Al ₂ O ₃

FeS 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Ruby and Marcasite Chemical Formula

While comparing Ruby and Marcasite 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 Marcasite chemical formula.

Chemical formula of Ruby- Al ₂ O ₃
Chemical formula of Marcasite- FeS 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Ruby and Marcasite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Ruby and Marcasite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Ruby and Marcasite Optical Properties during the identification of gemstone. Specific gravity of Ruby is 4.80-4.90 whereas that of Marcasite is 4.80-4.90.