Ruby and Legrandite Physical Properties

Ruby

Legrandite

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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

3.97-4.053.98-4.04

1 7.18

1.5 Fracture

Conchoidal

Conchoidal, UnevenArthur Thomas, Gemstones (2009), Brittle

1.6 Cleavage

No true cleavage

Imperfect, poor one {100}

1.7 Mohs Hardness

94.5-5

2 10

1.8 Chemical Composition

Al ₂ O ₃

Zn 2(AsO 4)(OH) · H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Ruby and Legrandite Chemical Formula

While comparing Ruby and Legrandite 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 Legrandite chemical formula.

Chemical formula of Ruby- Al ₂ O ₃
Chemical formula of Legrandite- Zn 2(AsO 4)(OH) · H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Ruby and Legrandite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Ruby and Legrandite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Ruby and Legrandite Optical Properties during the identification of gemstone. Specific gravity of Ruby is 3.98-4.04 whereas that of Legrandite is 3.98-4.04.