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Prase
Prase

Alexandrite
Alexandrite



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Prase
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Alexandrite

Prase and Alexandrite Physical Properties

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1 Physical Properties
1.1 Tenacity
Not Available
Not Available
1.2 Solubility
Not Available
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
2.64-2.693.69-3.81
Amber
1 7.18
1.5 Fracture
Gems, Sixth Edition (2006), Gems, Sixth Edition (2006)
Not Available
1.6 Cleavage
Not Available
1,1 ; 3,2.
1.7 Mohs Hardness
78.5
Amber
2 10
1.8 Chemical Composition
SiO 2Michael O’Donoghue , Gems, Sixth Edition (2006)
BeAl 2 O 4

Prase and Alexandrite Chemical Formula

While comparing Prase 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 Prase and Alexandrite chemical formula.

  • Chemical formula of Prase- SiO 2Michael O’Donoghue , Gems, Sixth Edition (2006)
  • Chemical formula of Alexandrite- BeAl 2 O 4

Prase and Alexandrite Specific Gravity

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