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Datolite
Datolite

Tanzanite
Tanzanite



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Datolite and Tanzanite Physical Properties

1 Physical Properties
1.1 Tenacity
Brittle
Not Available
1.2 Solubility
Not Available
Not Available
1.3 Durability
Not Available
Hard
1.4 Specific Gravity
2.90-3.00
3.35
1.5 Fracture
Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Brittle, Metallic
Uneven, Conchoidal, UnevenWalter Schumann, Gemstones of the world (2001)
1.6 Cleavage
None
Perfect {010}, imperfect {100}
1.7 Mohs Hardness
5-5.5
6.5-7
1.8 Chemical Composition
CaBSiO 4(OH)Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references
Ca2Al3(SiO4)3(OH)

Datolite and Tanzanite Chemical Formula

While comparing Datolite and Tanzanite 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 Tanzanite chemical formula.

  • Chemical formula of Datolite- CaBSiO 4(OH)Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references
  • Chemical formula of Tanzanite- Ca2Al3(SiO4)3(OH)

Datolite and Tanzanite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Datolite and Tanzanite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Datolite and Tanzanite Optical Properties during the identification of gemstone. Specific gravity of Datolite is 3.35 whereas that of Tanzanite is 3.35.