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Gibbsite
Gibbsite

Tanzanite
Tanzanite



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Gibbsite and Tanzanite Physical Properties

1 Physical Properties
1.1 Tenacity
Not Available
Not Available
1.2 Solubility
Not Available
Not Available
1.3 Durability
Not Available
Hard
1.4 Specific Gravity
2.35
3.35
1.5 Fracture
Fibrous, Difficult, Fibrous
Uneven, Conchoidal, UnevenWalter Schumann, Gemstones of the world (2001)
1.6 Cleavage
{001} Perfect
Perfect {010}, imperfect {100}
1.7 Mohs Hardness
2.5-3
6.5-7
1.8 Chemical Composition
Al(OH)3
Ca2Al3(SiO4)3(OH)

Gibbsite and Tanzanite Chemical Formula

While comparing Gibbsite 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 Gibbsite and Tanzanite chemical formula.

  • Chemical formula of Gibbsite- Al(OH)3
  • Chemical formula of Tanzanite- Ca2Al3(SiO4)3(OH)

Gibbsite and Tanzanite Specific Gravity

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