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Chalcedony
Chalcedony

Sapphire
Sapphire



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Chalcedony
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Sapphire

Chalcedony and Sapphire Physical Properties

1 Physical Properties
1.1 Tenacity
Not Available
Not Available
1.2 Solubility
Soluble
insoluble
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
2.55-2.703.95-4.03
Amber
1 7.18
1.5 Fracture
Uneven, Splintery, Conchoidal, Uneven, Splintery, Conchoidal, UnevenWalter Schumann
Uneven, Uneven, Gems, Sixth Edition (2006)
1.6 Cleavage
Absent
None, but may exhibit parting
1.7 Mohs Hardness
6.5-79
Amber
2 10
1.8 Chemical Composition
SiO2
Al 2 O 3

Chalcedony and Sapphire Chemical Formula

While comparing Chalcedony and 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 Chalcedony and Sapphire chemical formula.

  • Chemical formula of Chalcedony- SiO2
  • Chemical formula of Sapphire- Al 2 O 3

Chalcedony and Sapphire Specific Gravity

Another important criteria for qualitative analysis of gemstones is Chalcedony and Sapphire Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Chalcedony and Sapphire Optical Properties during the identification of gemstone. Specific gravity of Chalcedony is 3.95-4.03 whereas that of Sapphire is 3.95-4.03.