Corindon - saphir

Corundum

  1. The red corundum, the color of which is due to the vanadium or to the chromium is the ruby.
  2. The blue corundum is the sapphire.
  3. Corundum, in the other colors, is sapphires with as adjective that of the color: sapphire pink, yellow sapphire, sapphire orange, sapphire green, purple sapphire...

To know more about the Corundum, see Mindat.org->