Alexandrite and Colemanite Physical Properties

Alexandrite

Colemanite

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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

3.69-3.812.40-2.42

1 7.18

1.5 Fracture

Not Available

Gemstones (2009), UnevenArthur Thomas, Gemstones (2009), Brittle, Metallic

1.6 Cleavage

1,1 ; 3,2.

{010} Perfect, {001} Distinct

1.7 Mohs Hardness

8.54.5

2 10

1.8 Chemical Composition

BeAl ₂ O ₄

Ca 2B 6O 11 · 5H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Alexandrite and Colemanite Chemical Formula

While comparing Alexandrite and Colemanite 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 Colemanite chemical formula.

Chemical formula of Alexandrite- BeAl ₂ O ₄
Chemical formula of Colemanite- Ca 2B 6O 11 · 5H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Alexandrite and Colemanite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Alexandrite and Colemanite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Alexandrite and Colemanite Optical Properties during the identification of gemstone. Specific gravity of Alexandrite is 2.40-2.42 whereas that of Colemanite is 2.40-2.42.