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Ed Bristol
Ceylon Cobalt Spinel
Tanzanian Ruby
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3.15 Carat
Agua Blue
Light 10
Lightly Included



  • Identification: Natural Unheated & Untreated Cobalt Spinel
  • Carat: 3.15
  • Shape: Round Brilliant
  • Measures: 8.67-8.89x6.07 (millimeter)
  • Color Grade: n.a.
  • Tone: Light 10
  • Color Zoning: None
  • Clarity: Lightly Included
  • Cutting Grade: Excellent (precision cut)
    • Brilliancy: 95%
    • Depth: 68%
  • Origin: Sri Lanka
  • Treatment: None

Certificate No: Guebelin 14070005

Overall Grade: Excellent+

Comment: This is not only a gemmological miracle (faint blue cobalt spinel) but also a stunning beauty. Proudly presented: Guebelin certified no-heat cobalt spinel. Plainly spoken: looks like fancy blue diamond only better. Cannot be cheap (sorry). Defies the camera, and the mind.  Excellent cutting. No visible inclusions. Blasting with brilliancy. See blue in side image. See lustre in handshot. Haven't had so much fun in weeks! What a gemstone! (If it were not repetitive I would make another bet: you can't find a second one.)

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Two (2) vouchers cutting 33% off THE BEST:

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Totally limited availability. Until first of December only.


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