Alexandrite and Lazulite Physical Properties

Alexandrite

Lazulite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.69-3.813.04-3.17

1 7.18

1.5 Fracture

Not Available

Uneven, Uneven, Gemstones of the world (2001) More from other references

1.6 Cleavage

1,1 ; 3,2.

{001} Indistinct, {???} Indistinct

1.7 Mohs Hardness

8.55.5

2 10

1.8 Chemical Composition

BeAl ₂ O ₄

(Mg,Fe)Al 2(PO 4) 2(OH) 2Arthur Thomas , Gemstones (2009) More from other references

Alexandrite and Lazulite Chemical Formula

While comparing Alexandrite and Lazulite 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 Lazulite chemical formula.

Chemical formula of Alexandrite- BeAl ₂ O ₄
Chemical formula of Lazulite- (Mg,Fe)Al 2(PO 4) 2(OH) 2Arthur Thomas , Gemstones (2009) More from other references

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Alexandrite and Lazulite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Alexandrite and Lazulite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Alexandrite and Lazulite Optical Properties during the identification of gemstone. Specific gravity of Alexandrite is 3.04-3.17 whereas that of Lazulite is 3.04-3.17.