The red color of ruby is due to __________


Ruby is the mineral corundum which has the traces of Chromium element which causes the red colour in the ruby. This can range from an orangy red to a purplish red.

  • Ruby is a one variety of the corundum mineral species, that also contains sapphire.
  • Ruby is valued for its beauty and can earn high per-carat costs. It is, without a doubt, one of the most valuable gems in the coloured stone industry.
  • Corundum is a colourless mineral in its purest form.
  • Colour changes are caused by trace elements that become a component of the mineral’s crystal structure.
  • The amount of chromium in a ruby determines how intense the red colour is; the more chromium, the stronger the red colour.
  • Fluorescence can be caused by chromium, which intensifies the red colour.

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