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Tanzanite
Tanzanite

Faustite
Faustite



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Tanzanite
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Faustite

Tanzanite and Faustite Physical Properties

Physical Properties

Tenacity

-
-

Solubility

-
-

Durability

Hard
-

Specific Gravity

3.352.9
1 7.18
👆🏻

Fracture

Uneven, Conchoidal
Conchoidal

Cleavage

Perfect {010}, imperfect {100}
{???} Indistinct

Mohs Hardness

6.5-74.5
2 10
👆🏻

Chemical Composition

Ca2Al3(SiO4)3(OH)
(Zn,Cu)Al 6(PO 4) 4(OH) 8 · 4H 2OMichael O’Donoghue , Gems, Sixth Edition (2006)

Tanzanite and Faustite Chemical Formula

While comparing Tanzanite and Faustite 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 Faustite chemical formula.

  • Chemical formula of Tanzanite- Ca2Al3(SiO4)3(OH)
  • Chemical formula of Faustite- (Zn,Cu)Al 6(PO 4) 4(OH) 8 · 4H 2OMichael O’Donoghue , Gems, Sixth Edition (2006)

Tanzanite and Faustite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Tanzanite and Faustite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Tanzanite and Faustite Optical Properties during the identification of gemstone. Specific gravity of Tanzanite is 2.9 whereas that of Faustite is 2.9.