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Dioptase
Dioptase

Alexandrite
Alexandrite



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Dioptase
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Alexandrite

Dioptase and Alexandrite Physical Properties

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
Brittle
Soluble
-
3.25-3.35
Conchoidal, ConchoidalWalter Schumann
Perfect in three directions
5
CuSiO 2(OH) 2Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references
 
-
-
-
3.69-3.81
-
1,1 ; 3,2.
8.5
BeAl 2 O 4

Dioptase and Alexandrite Chemical Formula

While comparing Dioptase 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 Dioptase and Alexandrite chemical formula.

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Dioptase and Alexandrite Specific Gravity

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