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Tanzanite
Tanzanite

Selenite
Selenite



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Tanzanite
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Selenite

Tanzanite and Selenite Physical Properties

Physical Properties

Tenacity

-
-

Solubility

-
-

Durability

Hard
-

Specific Gravity

3.35-9999
1 7.18
👆🏻

Fracture

Uneven, Conchoidal
-

Cleavage

Perfect {010}, imperfect {100}
Perfect

Mohs Hardness

6.5-72
2 10
👆🏻

Chemical Composition

Ca2Al3(SiO4)3(OH)
CaSO4·2H2O

Tanzanite and Selenite Chemical Formula

While comparing Tanzanite and Selenite 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 Selenite chemical formula.

  • Chemical formula of Tanzanite- Ca2Al3(SiO4)3(OH)
  • Chemical formula of Selenite- CaSO4·2H2O

Tanzanite and Selenite Specific Gravity

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