Pear-shaped sapphire of 2.13 carats, brilliant-cut diamond of 2.89 carats, French assay mark for 18K yellow gold (750‰), signed René Boivin, French maker’s mark (Voirin-Sonrel), 1976, René Boivin fitted case SSEF, 2025, report n°149440: 2.139 carats, Burma (Myanmar), no indications of heating GIA, 2025, report n°2537651045: 2.89 carats, J colour, SI1 clarity, no fluorescence Maison René Boivin, 2025: Certificate of Authenticity n°202512YAX, original piece manufactured by René Boivin in May 1976 after a drawing by Marie-Caroline de Brosses Size/Dimensions: EU ring size 52/ US ring size 6 Gross weight: 18.60 grams