COLOURED DIAMOND AND DIAMOND RING, HARRY WINSTON

COLOURED DIAMOND AND DIAMOND RING, HARRY WINSTON
Fancy vivid yellow cut-cornered rectangular modified brilliant-cut diamond of 10.23 carats, shield-shaped diamonds, platinum and gold, ring size 6 ¼, maker's mark, blue Harry Winston case
GIA, 2019, report no. 11370121: 10.23 carats, Fancy Vivid Yellow colour, VVS2 clarity
Harry Winston, 2019, letter: Date of manufacture 2003
US$400,000-650,000