A diamond single-stone ring, by Cartier, the brilliant-cut diamond, weighing 1.21 carats, within a four-claw setting, signed Cartier, maker's mark, numbered 48 RP9623, mounted in platinum, Swiss assay marks, ring size I, maker's case and certificate of authenticity. mpanied by a certificate from the Gemological Institute of America (GIA) stating that the diamond is G colour, VVS1 clarity. Certificate number 2116805646, dated 10 January 2011.