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a close up of a diamond ring on a white backgrounda close up of a diamond ring on a white surfacean old cut diamond ring with a center stone surrounded by a filigree banda close up of a diamond ring on a white background
BOISGIRARD - ANTONINI

Estimate €2,000 - €3,000
Sale commission
Description
SOLITAIRE RING 1.70-carat diamond An 18-carat white gold (750 ‰) solitaire ring, set with a round brilliant-cut diamond in a crown-style prong setting. The diamond: round, brilliant cut; dimensions 7.58–7.84 × 4.48 mm; weight 1.70 ct; colour K; clarity SI2; no fluorescence; no indication of treatment. Comments: traces of the rough stone’s shape, additional facets (report from the French Gemmological Laboratory No. 426398 dated 15 June 2026). French craftsmanship, 18-carat white gold (750 ‰); eagle’s head hallmark. Traces of cutting. First half of the 20th century. Ring size: 51.5 — Gross weight: 2.3 g.
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About the sale Charity sale in aid of the Petits Frères Des Pauvres charity
Auction location
Auction time 10/25/2026 at 10:00 AM
Pictures credits:
Boisgirard Antonini
See original version (French)
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