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Caledonite
Caledonite

Tanzanite
Tanzanite



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Caledonite
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Tanzanite

Caledonite and Tanzanite Physical Properties

Physical Properties

Tenacity

Brittle
-

Solubility

-
-

Durability

-
Hard

Specific Gravity

5.6-5.763.35
1 7.18
👆🏻

Fracture

Uneven
Uneven, Conchoidal

Cleavage

[001] perfect; [100] distinct
Perfect {010}, imperfect {100}

Mohs Hardness

2.5-36.5-7
2 10
👆🏻

Chemical Composition

Pb 5Cu 2(SO 4) 3(CO 3)(OH) 6Anthony et al , Handbook of mineralogy (2001)
Ca2Al3(SiO4)3(OH)

Caledonite and Tanzanite Chemical Formula

While comparing Caledonite 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 Caledonite and Tanzanite chemical formula.

  • Chemical formula of Caledonite- Pb 5Cu 2(SO 4) 3(CO 3)(OH) 6Anthony et al , Handbook of mineralogy (2001)
  • Chemical formula of Tanzanite- Ca2Al3(SiO4)3(OH)

Caledonite and Tanzanite Specific Gravity

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