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Prase
Prase

Tanzanite
Tanzanite



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Prase
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Prase and Tanzanite Physical Properties

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Physical Properties

Tenacity

-
-

Solubility

-
-

Durability

-
Hard

Specific Gravity

2.64-2.693.35
1 7.18
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Fracture

-
Uneven, Conchoidal

Cleavage

None
Perfect {010}, imperfect {100}

Mohs Hardness

76.5-7
2 10
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Chemical Composition

SiO 2Michael O’Donoghue , Gems, Sixth Edition (2006)
Ca2Al3(SiO4)3(OH)

Prase and Tanzanite Chemical Formula

While comparing Prase 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 Prase and Tanzanite chemical formula.

  • Chemical formula of Prase- SiO 2Michael O’Donoghue , Gems, Sixth Edition (2006)
  • Chemical formula of Tanzanite- Ca2Al3(SiO4)3(OH)

Prase and Tanzanite Specific Gravity

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