Caledonite and Star Sapphire Physical Properties
Tenacity
Brittle
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
5.6-5.76
3.90-4.05
Fracture
Uneven, UnevenAnthony et al, Handbook of mineralogy (2001)
Not Available
Cleavage
[001] perfect; [100] distinct
Not Available
Mohs Hardness
2.5-3
Not Available
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.
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.