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Tanzanite
Tanzanite

Lazulite
Lazulite



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Tanzanite
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Lazulite

Tanzanite and Lazulite Physical Properties

1 Physical Properties
1.1 Tenacity
Not Available
Not Available
1.2 Solubility
Not Available
Not Available
1.3 Durability
Hard
Not Available
1.4 Specific Gravity
3.353.04-3.17
Amber
1 7.18
1.5 Fracture
Uneven, Conchoidal, UnevenWalter Schumann, Gemstones of the world (2001)
Uneven, Uneven, Gemstones of the world (2001) More from other references
1.6 Cleavage
Perfect {010}, imperfect {100}
{001} Indistinct, {???} Indistinct
1.7 Mohs Hardness
6.5-75.5
Amber
2 10
1.8 Chemical Composition
Ca2Al3(SiO4)3(OH)
(Mg,Fe)Al 2(PO 4) 2(OH) 2Arthur Thomas , Gemstones (2009) More from other references

Tanzanite and Lazulite Chemical Formula

While comparing Tanzanite and Lazulite 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 Tanzanite and Lazulite chemical formula.

  • Chemical formula of Tanzanite- Ca2Al3(SiO4)3(OH)
  • Chemical formula of Lazulite- (Mg,Fe)Al 2(PO 4) 2(OH) 2Arthur Thomas , Gemstones (2009) More from other references

Tanzanite and Lazulite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Tanzanite and Lazulite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Tanzanite and Lazulite Optical Properties during the identification of gemstone. Specific gravity of Tanzanite is 3.04-3.17 whereas that of Lazulite is 3.04-3.17.