Ulexite and Emerald Physical Properties
Tenacity
Not Available
  
Not Available
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Hard
  
Specific Gravity
1.65-1.99
  
2.67-2.78
  
Fracture
UnevenAnthony et al, Uneven, UnevenAnthony et al, Uneven, Brittle, Metallic
  
Uneven, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001)
  
Cleavage
{010} Perfect, {110} Perfect
  
Imperfect on the [0001]
  
Mohs Hardness
2-2.5
  
7.5-8
  
Chemical Composition
NaCaB 5O 6(OH) 6 · 5H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)
  
Be3Al2SiO6
  
Ulexite and Emerald Chemical Formula
While comparing Ulexite and Emerald 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 Emerald chemical formula.
- Chemical formula of Ulexite- NaCaB 5O 6(OH) 6 · 5H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)
- Chemical formula of Emerald- Be3Al2SiO6
Ulexite and Emerald Specific Gravity
Another important criteria for qualitative analysis of gemstones is Ulexite and Emerald Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Ulexite and Emerald Optical Properties during the identification of gemstone. Specific gravity of Ulexite is 2.67-2.78 whereas that of Emerald is 2.67-2.78.