Semiprecious stone

The fine stones are Gemme S, in the past called semi-precious , they gather the transparent gems not classified among the invaluable Pierres:

  • the Aquamarine, transparent, (blue pale green)

  • the Amethyst, transparent, (crimson)
  • the Citrine ,
  • the Rock crystal, transparency, (clearly)
  • the Cordierite,
  • the géode,
  • the Garnet-red , translucent, (red, maroon, green or purple),
  • the Peridot,
  • the Tanzanite,
  • the Topaz, transparent, light blue with bed,
  • the Tourmaline, transparent, (green, blue, chestnut or pale red),
  • the Zircon, transparency, (colorless, blue, green pale with green, brown, etc .).

These gems are in particular used in Joaillerie.

See too

  • fine Stones
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