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Alexandrite
Alexandrite

Aragonite
Aragonite



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Alexandrite
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Aragonite

Alexandrite and Aragonite Physical Properties

Physical Properties

Tenacity

-
Brittle

Solubility

-
Dilute acid

Durability

-
-

Specific Gravity

3.69-3.812.93-2.96
1 7.18
👆🏻

Fracture

-
Subconchoidal, Conchoidal

Cleavage

1,1 ; 3,2.
Distinct on {010}, imperfect {110} and {011}

Mohs Hardness

8.53.5-4
2 10
👆🏻

Chemical Composition

BeAl 2 O 4
CaCO 3Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Alexandrite and Aragonite Chemical Formula

While comparing Alexandrite and Aragonite 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 Aragonite chemical formula.

  • Chemical formula of Alexandrite- BeAl 2 O 4
  • Chemical formula of Aragonite- CaCO 3Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Alexandrite and Aragonite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Alexandrite and Aragonite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Alexandrite and Aragonite Optical Properties during the identification of gemstone. Specific gravity of Alexandrite is 2.93-2.96 whereas that of Aragonite is 2.93-2.96.