Gahnite and Caledonite Physical Properties

Gahnite

Caledonite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

4.00-4.625.6-5.76

1 7.18

1.5 Fracture

Conchoidal, Uneven

Uneven, UnevenAnthony et al, Handbook of mineralogy (2001)

1.6 Cleavage

Indistinct parting on [111]

[001] perfect; [100] distinct

1.7 Mohs Hardness

7.5-82.5-3

2 10

1.8 Chemical Composition

ZnAl 2O 4Michael OâDonoghue , Gems, Sixth Edition (2006)

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

Gahnite and Caledonite Chemical Formula

While comparing Gahnite and Caledonite 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 Gahnite and Caledonite chemical formula.

Chemical formula of Gahnite- ZnAl 2O 4Michael OâDonoghue , Gems, Sixth Edition (2006)
Chemical formula of Caledonite- Pb 5Cu 2(SO 4) 3(CO 3)(OH) 6Anthony et al , Handbook of mineralogy (2001)

Compare Blue Gemstones

Gahnite Vs Hydrogrossular

Gahnite Vs Howlite

Gahnite Vs Indicolite Blue Tourmaline

Gahnite and Caledonite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Gahnite and Caledonite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Gahnite and Caledonite Optical Properties during the identification of gemstone. Specific gravity of Gahnite is 5.6-5.76 whereas that of Caledonite is 5.6-5.76.