Alexandrite and Legrandite Physical Properties

Alexandrite

Legrandite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.69-3.813.98-4.04

1 7.18

1.5 Fracture

Not Available

Conchoidal, UnevenArthur Thomas, Gemstones (2009), Brittle

1.6 Cleavage

1,1 ; 3,2.

Imperfect, poor one {100}

1.7 Mohs Hardness

8.54.5-5

2 10

1.8 Chemical Composition

BeAl ₂ O ₄

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

Alexandrite and Legrandite Chemical Formula

While comparing Alexandrite 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 Alexandrite and Legrandite chemical formula.

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

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Alexandrite and Legrandite Specific Gravity

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