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Alexandrite
Alexandrite

Peridot
Peridot



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Alexandrite
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Alexandrite and Peridot Physical Properties

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
3.69-3.81
1.54-1.55
1.5 Fracture
Not Available
Conchoidal
1.6 Cleavage
1,1 ; 3,2.
Poor
1.7 Mohs Hardness
8.5
6.5-7
1.8 Chemical Composition
BeAl 2 O 4
(Mg,Fe)2SiO4

Alexandrite and Peridot Chemical Formula

While comparing Alexandrite and Peridot 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 Peridot chemical formula.

  • Chemical formula of Alexandrite- BeAl 2 O 4
  • Chemical formula of Peridot- (Mg,Fe)2SiO4

Alexandrite and Peridot Specific Gravity

Another important criteria for qualitative analysis of gemstones is Alexandrite and Peridot Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Alexandrite and Peridot Optical Properties during the identification of gemstone. Specific gravity of Alexandrite is 1.54-1.55 whereas that of Peridot is 1.54-1.55.