Alexandrite and Beryl Physical Properties

Alexandrite

Beryl

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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

3.69-3.81

2.60-2.90

1.5 Fracture

Not Available

Uneven, Conchoidal, Irregular, Conchoidal, Irregular, Conchoidal, Irregular, Conchoidal, Irregular, Conchoidal, Irregular, Conchoidal, Irregular, Conchoidal, Irregular, Conchoidal, Irregular, Conchoidal, Irregular, Conchoidal, Irregular, Conchoidal, Irregular, Conchoidal, Irregular, Conchoidal, Irregular, Conchoidal, Irregular, Conchoidal, Irregular, Conchoidal, Irregular, Conchoidal, Irregular, Conchoidal, Irregular, Conchoidal, Irregular, Conchoidal, Irregular, Conchoidal, Irregular, Conchoidal, Irregular, Conchoidal, Irregular, Conchoidal, Irregular, Conchoidal, Irregular, Conchoidal, Irregular, Conchoidal, Irregular, Conchoidal, Irregular, Conchoidal, Irregular, Conchoidal, Irregular, Conchoidal, Irregular, Conchoidal, Irregular, Conchoidal, Irregular, Conchoidal, Irregular, Conchoidal, Irregular, Conchoidal, Irregular, Conchoidal, Irregular, Conchoidal, Irregular, Conchoidal, Irregular, Conchoidal, Irregular, Conchoidal, Irregular, Conchoidal, Irregular, Conchoidal, Irregular, Conchoidal, Irregular, Uneven, Gems, Brittle

1.6 Cleavage

1,1 ; 3,2.

Imperfect on {0001}

1.7 Mohs Hardness

8.5

7.5-8

1.8 Chemical Composition

BeAl ₂ O ₄

Be₃Al₂Si₆O₁₈

Alexandrite and Beryl Chemical Formula

While comparing Alexandrite and Beryl 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 Beryl chemical formula.

Chemical formula of Alexandrite- BeAl ₂ O ₄
Chemical formula of Beryl- Be₃Al₂Si₆O₁₈

Compare Gems for Scorpio

Alexandrite Vs Gahnospinel

Alexandrite Vs Citrine

Alexandrite Vs Fluorite

Alexandrite and Beryl Specific Gravity

Another important criteria for qualitative analysis of gemstones is Alexandrite and Beryl Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Alexandrite and Beryl Optical Properties during the identification of gemstone. Specific gravity of Alexandrite is 2.60-2.90 whereas that of Beryl is 2.60-2.90.