Amethyst and Emerald Physical Properties
Tenacity
Not Available
  
Not Available
  
Solubility
insoluble in common solvents
  
Not Available
  
Durability
Not Available
  
Hard
  
Specific Gravity
2.65
  
2.67-2.78
  
Fracture
Conchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001)
  
Uneven, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001)
  
Cleavage
Indiscernible
  
Imperfect on the [0001]
  
Mohs Hardness
7
  
7.5-8
  
Chemical Composition
SiO2
  
Be3Al2SiO6
  
Amethyst and Emerald Chemical Formula
While comparing Amethyst 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 Amethyst and Emerald chemical formula.
- Chemical formula of Amethyst- SiO2
- Chemical formula of Emerald- Be3Al2SiO6
Amethyst and Emerald Specific Gravity
Another important criteria for qualitative analysis of gemstones is Amethyst and Emerald Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Amethyst and Emerald Optical Properties during the identification of gemstone. Specific gravity of Amethyst is 2.67-2.78 whereas that of Emerald is 2.67-2.78.