Ulexite and Sardonyx Physical Properties
Tenacity
Not Available
  
Not Available
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
1.65-1.99
  
2.55-2.70
  
Fracture
UnevenAnthony et al, Uneven, UnevenAnthony et al, Uneven, Brittle, Metallic
  
Not Available
  
Cleavage
{010} Perfect, {110} Perfect
  
Not Available
  
Mohs Hardness
2-2.5
  
6.5-7
  
Chemical Composition
NaCaB 5O 6(OH) 6 · 5H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)
  
SiO 2Ulrich Henn and Claudio C.
  
Ulexite and Sardonyx Chemical Formula
While comparing Ulexite and Sardonyx 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 Ulexite and Sardonyx chemical formula.
- Chemical formula of Ulexite- NaCaB 5O 6(OH) 6 · 5H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)
- Chemical formula of Sardonyx- SiO 2Ulrich Henn and Claudio C.
Ulexite and Sardonyx Specific Gravity
Another important criteria for qualitative analysis of gemstones is Ulexite and Sardonyx Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Ulexite and Sardonyx Optical Properties during the identification of gemstone. Specific gravity of Ulexite is 2.55-2.70 whereas that of Sardonyx is 2.55-2.70.