Alexandrite and Agrellite Physical Properties

Alexandrite

Agrellite

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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

3.69-3.812.88

1 7.18

1.5 Fracture

Not Available

1.6 Cleavage

1,1 ; 3,2.

perfect [110]

1.7 Mohs Hardness

8.55.5

2 10

1.8 Chemical Composition

BeAl ₂ O ₄

NaCa2Si4O10F

Alexandrite and Agrellite Chemical Formula

While comparing Alexandrite and Agrellite 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 Agrellite chemical formula.

Chemical formula of Alexandrite- BeAl ₂ O ₄
Chemical formula of Agrellite- NaCa2Si4O10F

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Alexandrite and Agrellite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Alexandrite and Agrellite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Alexandrite and Agrellite Optical Properties during the identification of gemstone. Specific gravity of Alexandrite is 2.88 whereas that of Agrellite is 2.88.