Alexandrite and Chrysocolla Physical Properties

Alexandrite

Chrysocolla

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.69-3.81

2.00-2.45

1.5 Fracture

Not Available

Sub-Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle

1.6 Cleavage

1,1 ; 3,2.

none

1.7 Mohs Hardness

8.5

2-4

1.8 Chemical Composition

BeAl ₂ O ₄

Cu₂H₂Si₂O₅(OH)₄

Alexandrite and Chrysocolla Chemical Formula

While comparing Alexandrite and Chrysocolla 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 Chrysocolla chemical formula.

Chemical formula of Alexandrite- BeAl ₂ O ₄
Chemical formula of Chrysocolla- Cu₂H₂Si₂O₅(OH)₄

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Alexandrite and Chrysocolla Specific Gravity

Another important criteria for qualitative analysis of gemstones is Alexandrite and Chrysocolla Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Alexandrite and Chrysocolla Optical Properties during the identification of gemstone. Specific gravity of Alexandrite is 2.00-2.45 whereas that of Chrysocolla is 2.00-2.45.