Alexandrite and Liddicoatite Physical Properties

Alexandrite

Liddicoatite

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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

3.69-3.813.02

1 7.18

1.5 Fracture

Not Available

Uneven, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal

1.6 Cleavage

1,1 ; 3,2.

{0001} Poor

1.7 Mohs Hardness

8.5Not Available

2 10

1.8 Chemical Composition

BeAl ₂ O ₄

Ca(Li 2Al)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)

Alexandrite and Liddicoatite Chemical Formula

While comparing Alexandrite and Liddicoatite 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 Liddicoatite chemical formula.

Chemical formula of Alexandrite- BeAl ₂ O ₄
Chemical formula of Liddicoatite- Ca(Li 2Al)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)

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Alexandrite and Liddicoatite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Alexandrite and Liddicoatite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Alexandrite and Liddicoatite Optical Properties during the identification of gemstone. Specific gravity of Alexandrite is 3.02 whereas that of Liddicoatite is 3.02.