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a close up of a blue sapphire and diamond ring on a black surfacea blue sapphire and diamond ring on a black surfacea close up of a ring with a blue stone
BOISGIRARD ANTONINI PCA

291 - Platinum signet ring (min. 800‰) set with an octagonal step-…
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Estimate €1,800 - €2,200
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Description
Platinum signet ring (min. 800‰) set with an octagonal step-cut sapphire, surrounded by brilliant-cut diamonds. Ring size: 55. Width: 1.7 cm. Gross weight: 19.8 g.
See original version (French)
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About the sale [Nice] Jewellery – Watches & gold items – ANANTARA PLAZA
Auction location
Auction time 07/26/2026 at 10:00 AM
Pictures credits: Contact the Auction House
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