Lot 166. An aquamarine and diamond ring, by Cartier. Estimate £ 4,000 - 6,000  (US$5,200 - 7,800). Courtesy Bonham's.

The rectangular step-cut aquamarine within pavé-set brilliant-cut diamond shoulders, the gallery highlighted with two brilliant-cut diamonds, aquamarine approximately 14.48 carats, diamonds approximately 1.66 carats total, signed Cartier, numbered H4S00673, maker's mark, French assay mark, ring size O½.

Note: For details of an insurance document from Cartier, dated 21 February 2018, please contact the department.

Bonham's. London Jewels, December 4, 2019 2:00 PM GMT