Legrandite and Sapphire Physical Properties

Legrandite

Sapphire

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

insoluble

1.3 Durability

Not Available

1.4 Specific Gravity

3.98-4.043.95-4.03

1 7.18

1.5 Fracture

Conchoidal, UnevenArthur Thomas, Gemstones (2009), Brittle

Uneven, Uneven, Gems, Sixth Edition (2006)

1.6 Cleavage

Imperfect, poor one {100}

None, but may exhibit parting

1.7 Mohs Hardness

4.5-59

2 10

1.8 Chemical Composition

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

Al ₂ O ₃

Legrandite and Sapphire Chemical Formula

While comparing Legrandite and Sapphire 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 Legrandite and Sapphire chemical formula.

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

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Legrandite and Sapphire Specific Gravity

Another important criteria for qualitative analysis of gemstones is Legrandite and Sapphire Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Legrandite and Sapphire Optical Properties during the identification of gemstone. Specific gravity of Legrandite is 3.95-4.03 whereas that of Sapphire is 3.95-4.03.