Fluorite and Alexandrite Physical Properties

Fluorite

Alexandrite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

slightly water soluble and in hot hydrochloric acid

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.00-3.253.69-3.81

1 7.18

1.5 Fracture

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

Not Available

1.6 Cleavage

Octahedral, perfect on {111}, parting on {011}

1,1 ; 3,2.

1.7 Mohs Hardness

48.5

2 10

1.8 Chemical Composition

CaF₂

BeAl ₂ O ₄

Fluorite and Alexandrite Chemical Formula

While comparing Fluorite and Alexandrite 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 Fluorite and Alexandrite chemical formula.

Chemical formula of Fluorite- CaF₂
Chemical formula of Alexandrite- BeAl ₂ O ₄

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Fluorite and Alexandrite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Fluorite and Alexandrite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Fluorite and Alexandrite Optical Properties during the identification of gemstone. Specific gravity of Fluorite is 3.69-3.81 whereas that of Alexandrite is 3.69-3.81.