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White Gold, Tourmaline and Black Diamond Knot Ring

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Of knot design, featuring a blue tourmaline, accented by black diamonds.

  • Tourmaline weighs approximately 2.90 carats
  • Black diamonds weighing a total of approximately 2.40 carats
  • Signed COSTAGLI
  • 18 karat white gold, marked 750
  • Total weight 17.3 grams
  • Size 6, center length measures 23.3mm