Wood Opal and Emerald Physical Properties
Tenacity
Not Available
  
Not Available
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Hard
  
Specific Gravity
1.98-2.50
  
2.67-2.78
  
Fracture
Not Available
  
Uneven, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001)
  
Cleavage
Not Available
  
Imperfect on the [0001]
  
Mohs Hardness
5.5-6.5
  
7.5-8
  
Chemical Composition
SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001)
  
Be3Al2SiO6
  
Wood Opal and Emerald Chemical Formula
While comparing Wood Opal 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 Wood Opal and Emerald chemical formula.
- Chemical formula of Wood Opal- SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001)
- Chemical formula of Emerald- Be3Al2SiO6
Wood Opal and Emerald Specific Gravity
Another important criteria for qualitative analysis of gemstones is Wood Opal and Emerald Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Wood Opal and Emerald Optical Properties during the identification of gemstone. Specific gravity of Wood Opal is 2.67-2.78 whereas that of Emerald is 2.67-2.78.