Cobalt spinel and diamond ring

Set with a cushion-shaped cobalt spinel weighing 3.03 carats, to the brilliant-cut diamond spiral surround, size 6½.

Accompanied by two gemmological reports.
附寶石證書兩張

Condition Report:
- Please refer to GRS report no. GRS2026-078993 for further information, dated 13 August 2026, the cobalt spinel is of Tanzanian origin, with no indication of thermal treatment
- Please refer to ICA lab report no. 164161 for further information, dated 17 January 2023, the cobalt spinel is of Tanzanian origin, with no indications of heating
- Cobalt spinel of blue colour, medium strong saturation and medium tone. Overall clean to the unaided eye, upon 10X magnification, there are minor typical inclusions with a few lightly surface reaching, a few tiny pits, minute abrasions and two minor chips but not noticeable when worn
- Stamped 3.03 referring to the weight of the cobalt spinel
- Stamped D0.64 referring to the total diamond weight of approximately 0.64 carat, are bright and lively
- Stamped Pt900 for platinum
- Ring size 6½
- Gross weight: 8.1 grams
- Metal in near-new condition
- Overall condition and make very good

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