DEMANTOID, the green variety of andradite garnet


VARIETY INFORMATION:

  • VARIETY OF: Andradite garnet, Ca3 Fe2 Si3 O12.
  • USES: Gemstone.
  • COLOR: various shades of green.
  • INDEX OF REFRACTION: 1.89
  • HARDNESS: 6.5 - 7
  • CLEAVAGE: none
  • CRYSTAL SYSTEM: isometric
  • SPECIMENS
Demantoid is one of the gem varieties of the garnet mineral, andradite. Its green color is similar to peridot but with a yellowish shading. Demantoid is not the only green garnet. Uvarovite and the green grossular garnet variety called tsavorite are also cut for gems. Chromium is the coloring agent of demantoid.
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Available DEMANTOID specimens:
see this List of ALL specimens including SOLD ones

 

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