Details
Oval-shaped sapphire and pink sapphire, round and single-cut diamonds, French assay marks for 18K yellow gold (750‰), French maker’s mark (Société Charles Profillet), 1970

Gem Paris, 2025, report n°20251978393-1: 1 pink sapphire and 1 sapphire, Sri Lanka, non-heated

Maison René Boivin, 2025: Certificate of Authenticity n°202512YRR, original piece manufactured by René Boivin in May 1970 after a drawing by Juliette Moutard

Sapphire: for an approximate weight of 3.00-3.10 carats
Pink sapphire: for an approximate weight of 2.90-3.10 carats

Size/Dimensions: EU ring size 51 / US ring size 512
Gross weight: 18.12 grams
Literature
Cf. F. Cailles, René Boivin, Joaillier, Les Éditions de l'Amateur, Paris, 1994, p. 322 for a similar piece.
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