Details
Round sapphires, round diamonds, French assay mark for 18K yellow gold (750‰), signed René Boivin, French maker’s mark (Voirin-Saurel), 1976

Maison René Boivin, 2025: Certificate of Authenticity n°202512YRS, original piece manufactured by René Boivin in March 1976 after a drawing by Marie-Caroline de Brosses

Sapphires: for an approximate total weight of 3.80-4.20 carats
Diamonds: for an approximate total weight of 0.30-0.50 carat

Size/Dimensions: EU ring size 4712/ US ring size 414
Gross weight: 15.83 grams
Literature
Cf. F. Cailles, René Boivin, Joaillier, Les Éditions de l'Amateur, Paris, 1994, p. 363 for a similar piece.
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