Jade and Chalcedony Physical Properties
Tenacity
Not Available
  
Not Available
  
Solubility
Not Available
  
Soluble
  
Durability
Not Available
  
Not Available
  
Specific Gravity
2.90-3.38
  
2.55-2.70
  
Fracture
Gemstones of the world (2001), Difficult, Splintery
  
Uneven, Splintery, Conchoidal, Uneven, Splintery, Conchoidal, UnevenWalter Schumann
  
Cleavage
1 or 2,2 prismatic.
  
Absent
  
Mohs Hardness
6-7
  
6.5-7
  
Chemical Composition
Nephrite: Ca2(Mg,Fe)5Si8O22(OH)2 Jadeite: NaAlSi2O6
  
SiO2
  
Jade and Chalcedony Chemical Formula
While comparing Jade and Chalcedony 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 Jade and Chalcedony chemical formula.
- Chemical formula of Jade- Nephrite: Ca2(Mg,Fe)5Si8O22(OH)2 Jadeite: NaAlSi2O6
- Chemical formula of Chalcedony- SiO2
Jade and Chalcedony Specific Gravity
Another important criteria for qualitative analysis of gemstones is Jade and Chalcedony Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Jade and Chalcedony Optical Properties during the identification of gemstone. Specific gravity of Jade is 2.55-2.70 whereas that of Chalcedony is 2.55-2.70.