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We consider three basic factors to classify the color in Gemstones, i.e. Hue, Saturation and Tone.

  • Hue is the color range i.e. Red, Green, Blue, Orange Purple etc.
  • Saturation is the intensity of the hue present in the Gemstone i.e. 100% is the pure color or 0% is the gray.
  • Tone is how light or dark a Gemstone is i.e. very light (closer to white range) or (very dark (closer to black range)



COLOR RANGE IN RUBY:

  • Red
  • Pinkish-Red
  • Scarlet Red
  • Intense Red
  • Crimson Red
  • Vivid Red "Pigeon's Blood"
  • Deep Red



COLOR RANGE IN SAPPHIRE:

  • Blue
  • Pastel Blue
  • Cornflower Blue
  • Peacock Blue
  • Velvet Blue
  • Vivid Blue "Royal Blue"
  • Twilight Blue



COLOR RANGE IN EMERALD:

  • Green
  • Pastel Green
  • Bright Green
  • Intense Green
  • Vivid Green “Muzo Green”
  • Delta Green