A PLATINUM, SAPPHIRE, AND DIAMOND RING, FRANCE Centering a large fancy-cut sapphire measuring approximately 16.60 x 13.60 x 7.25 mm, framed by old single and old mine-cut diamonds, millegrain accents, weight 5.6 dwt, partial French maker's mark and guaranteee stamp, size 7 1/2. Footnotes: Accompanied by a GIA report numbered 5231986061, dated June 23, 2026, stating that the sapphire is natural with no indications of heating. For further information on this lot please visit Bonhams.com For further information about this lot please visit the lot listing