Round rubies, round diamonds, French assay mark for 18K yellow gold (750‰) and silver (800‰), signed René Boivin, French maker’s mark (Yves Galtié), 1976, René Boivin fitted case Maison René Boivin, 2025: Certificate of Authenticity n°202512YAY, original piece manufactured by René Boivin in May 1976 after a drawing by Marie-Caroline de Brosses Rubies: for an approximate total weight of 4.00-4.40 carats Diamonds: for an approximate total weight of 4.60-5.00 carats Size/Dimensions: inner continuous circumference 15.0 cm Gross weight: 71.44 grams

Cf. F. Cailles, René Boivin Joaillier, Paris, Éditions de l'Amateur, 1994, p. 364 and 367 for a similar bangle.