Ruby and Anhydrite Physical Properties

Ruby

Anhydrite

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.97-4.052.90-2.98

1 7.18

1.5 Fracture

Conchoidal

Conchoidal, Brittle, Conchoidal, UnevenArthur Thomas, Gemstones (2009), Brittle, Conchoidal

1.6 Cleavage

No true cleavage

Rare tabular and prismatic crystals. Usually occurs as fibrous, parallel veins that break off into cleavage fragments.

1.7 Mohs Hardness

93.5

2 10

1.8 Chemical Composition

Al ₂ O ₃

CaSO 4Michael OâDonoghue , Gems, Sixth edition (2006) More from other references

Ruby and Anhydrite Chemical Formula

While comparing Ruby and Anhydrite 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 Anhydrite chemical formula.

Chemical formula of Ruby- Al ₂ O ₃
Chemical formula of Anhydrite- CaSO 4Michael OâDonoghue , Gems, Sixth edition (2006) More from other references

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Ruby and Anhydrite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Ruby and Anhydrite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Ruby and Anhydrite Optical Properties during the identification of gemstone. Specific gravity of Ruby is 2.90-2.98 whereas that of Anhydrite is 2.90-2.98.