amethyst brilliant-cut diamonds Set 2-piece, 585 yellow gold: 1. ) pair stud earrings 24 x brilliant-cut diamonds together approximate 0, 24 ct and oval amethysts together 0, 8 ct / / 2. ) pendant 12 brilliant-cut diamonds together 0, 12 ct, oval amethyst approximate 0, 6 ct, total weight approximate 8.09 g.