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Datolite
Datolite

Alexandrite
Alexandrite



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Datolite
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Alexandrite

Datolite and Alexandrite Physical Properties

1 Physical Properties
1.1 Tenacity
Brittle
Not Available
1.2 Solubility
Not Available
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
2.90-3.003.69-3.81
Amber
1 7.18
1.5 Fracture
Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Brittle, Metallic
Not Available
1.6 Cleavage
None
1,1 ; 3,2.
1.7 Mohs Hardness
5-5.58.5
Amber
2 10
1.8 Chemical Composition
CaBSiO 4(OH)Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references
BeAl 2 O 4

Datolite and Alexandrite Chemical Formula

While comparing Datolite 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 Datolite and Alexandrite chemical formula.

  • Chemical formula of Datolite- CaBSiO 4(OH)Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references
  • Chemical formula of Alexandrite- BeAl 2 O 4

Datolite and Alexandrite Specific Gravity

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