Onyx and Celestine Physical Properties
Tenacity
Not Available
Brittle
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.55-2.70
3.90-4.00
Fracture
Not Available
Gemstones (2009), UnevenArthur Thomas, Gemstones (2009), Brittle, Conchoidal
Cleavage
Indiscernible
Perfect on {001}, good on {210}, poor on {010}
Mohs Hardness
6.5-7
3-3.5
Chemical Composition
SiO2
SrSO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Onyx and Celestine Chemical Formula
While comparing Onyx and Celestine 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 Onyx and Celestine chemical formula.
- Chemical formula of Onyx- SiO2
- Chemical formula of Celestine- SrSO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Onyx and Celestine Specific Gravity
Another important criteria for qualitative analysis of gemstones is Onyx and Celestine Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Onyx and Celestine Optical Properties during the identification of gemstone. Specific gravity of Onyx is 3.90-4.00 whereas that of Celestine is 3.90-4.00.