Caledonite and Star Sapphire Physical Properties

Caledonite

Star Sapphire

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

5.6-5.763.90-4.05

1 7.18

1.5 Fracture

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

Not Available

1.6 Cleavage

[001] perfect; [100] distinct

Not Available

1.7 Mohs Hardness

2.5-3Not Available

2 10

1.8 Chemical Composition

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

Al 2O 3Ulrich Henn and Claudio C.

Caledonite and Star Sapphire Chemical Formula

While comparing Caledonite and Star Sapphire 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 Star Sapphire 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 Star Sapphire- Al 2O 3Ulrich Henn and Claudio C.

Compare Blue Gemstones

Caledonite Vs Chrysocolla

Caledonite Vs Common Opal

Caledonite Vs Coral

Caledonite and Star Sapphire Specific Gravity

Another important criteria for qualitative analysis of gemstones is Caledonite and Star Sapphire Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Caledonite and Star Sapphire Optical Properties during the identification of gemstone. Specific gravity of Caledonite is 3.90-4.05 whereas that of Star Sapphire is 3.90-4.05.