Chrysocolla and Alexandrite Physical Properties

Chrysocolla

Alexandrite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.00-2.453.69-3.81

1 7.18

1.5 Fracture

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

Not Available

1.6 Cleavage

none

1,1 ; 3,2.

1.7 Mohs Hardness

2-48.5

2 10

1.8 Chemical Composition

Cu₂H₂Si₂O₅(OH)₄

BeAl ₂ O ₄

Chrysocolla and Alexandrite Chemical Formula

While comparing Chrysocolla 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 Chrysocolla and Alexandrite chemical formula.

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

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Chrysocolla and Alexandrite Specific Gravity

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