Alexandrite and Chrysoprase Physical Properties

Alexandrite

Chrysoprase

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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

3.69-3.812.58-2.64

1 7.18

1.5 Fracture

Not Available

Gems, Sixth Edition (2006)

1.6 Cleavage

1,1 ; 3,2.

None

1.7 Mohs Hardness

8.56.5-7

2 10

1.8 Chemical Composition

BeAl ₂ O ₄

SiO₂ (with a high level of nickel impurities )

Alexandrite and Chrysoprase Chemical Formula

While comparing Alexandrite and Chrysoprase 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 Chrysoprase chemical formula.

Chemical formula of Alexandrite- BeAl ₂ O ₄
Chemical formula of Chrysoprase- SiO₂ (with a high level of nickel impurities )

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Alexandrite and Chrysoprase Specific Gravity

Another important criteria for qualitative analysis of gemstones is Alexandrite and Chrysoprase Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Alexandrite and Chrysoprase Optical Properties during the identification of gemstone. Specific gravity of Alexandrite is 2.58-2.64 whereas that of Chrysoprase is 2.58-2.64.