A platinum diamond and natural Ceylon sapphire ring (NTE). - image-1 A platinum diamond and natural Ceylon sapphire ring (NTE). - image-2

Lot 712 D α

A platinum diamond and natural Ceylon sapphire ring (NTE).

Auction 1229 - overview Cologne
16.11.2023, 16:00 - Jewellery and Watches
Estimate: 4.500 € - 5.000 €
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A platinum diamond and natural Ceylon sapphire ring (NTE).

Set with an untreated slightly violet tinted Ceylon sapphire of 7.91 ct (11.22 x 11.11 x 6.29 mm, NTE) in a cushion shaped square mixed cut flanked by six brilliant-cut diamonds on the shoulders. No hallmarks. Bezel 1.3 x 1.3 cm. Ring size 54. Weight 4.95 g.

Certificate

Coloured Stone Report No. 559263460 of the IGI dated 31st January 2023, confirming that the blue stone is a natural sapphire with no signs of treatment (NTE), origin Sri Lanka.