Sphalerite and diamond cocktail ring, of cluster design, centering a claw-set round modified brilliant-cut sphalerite weighing 87.88 carats, with a halo of brilliant-cut diamonds to split shoulders pave-set with diamonds, the diamonds together weighing approximately 1.45 carats, mounted in 18ct gold, size N, accompanied by a GIA report numbered 6213884422, dated 16 July 2021, stating that the 87.88 carat sphalerite is natural.