Cartier platinum 0.40ct solitaire diamond ring, stamped Cartier, Pt950, 0.40, 89720A, CS48, featuring a 0.40ct round brilliant cut diamond (colour G/clarity VVS1), laser inscribed with GIA #13732266, on a platinum tapered band, total weight 4.46gm, size K includes Cartier ring box and presentation box, Cartier GIA report card booklet plus a valuation certificate dated 2024