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Taaffeite
Taaffeite

Alexandrite
Alexandrite



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Taaffeite
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Alexandrite

Taaffeite and Alexandrite 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
3.60-3.613.69-3.81
Amber
1 7.18
1.5 Fracture
Conchoidal
Not Available
1.6 Cleavage
Imperfect/fair/absent
1,1 ; 3,2.
1.7 Mohs Hardness
8-8.58.5
Amber
2 10
1.8 Chemical Composition
Mg 3Al 8BeO 16Walter Schumann , Gemstones of the world (2001) More from other references
BeAl 2 O 4

Taaffeite and Alexandrite Chemical Formula

While comparing Taaffeite 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 Taaffeite and Alexandrite chemical formula.

  • Chemical formula of Taaffeite- Mg 3Al 8BeO 16Walter Schumann , Gemstones of the world (2001) More from other references
  • Chemical formula of Alexandrite- BeAl 2 O 4

Taaffeite and Alexandrite Specific Gravity

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