Amethyst and Phosphosiderite Physical Properties
Tenacity
Not Available
  
Not Available
  
Solubility
insoluble in common solvents
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
2.65
  
2.74-2.76
  
Fracture
Conchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001)
  
UnevenAnthony et al, Handbook of mineralogy (2001), UnevenAnthony et al, Handbook of mineralogy (2001), Uneven
  
Cleavage
Indiscernible
  
{010} Perfect, {001} Distinct
  
Mohs Hardness
7
  
3.5-4
  
Chemical Composition
SiO2
  
Fe3+ PO 4 · 2H 2OAnthony et al , Handbook of Mineralogy (2001)
  
Amethyst and Phosphosiderite Chemical Formula
While comparing Amethyst and Phosphosiderite 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 Phosphosiderite chemical formula.
- Chemical formula of Amethyst- SiO2
- Chemical formula of Phosphosiderite- Fe3+ PO 4 · 2H 2OAnthony et al , Handbook of Mineralogy (2001)
Amethyst and Phosphosiderite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Amethyst and Phosphosiderite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Amethyst and Phosphosiderite Optical Properties during the identification of gemstone. Specific gravity of Amethyst is 2.74-2.76 whereas that of Phosphosiderite is 2.74-2.76.