Vintage Platinum Santa Maria Aquamarine Diamond Ring. This stunning piece is centrally set with a rectangular stepped cut "ocean blue" so called Santa Maria aquamarine, measuring 21.00 x 14.60 x 9.60mm and weighing an impressive 22.85 carats. Flanked by emerald-cut diamonds totaling 1.55 carats combined, this ring is masterfully mounted in handmade platinum, weighing 9.30 Dwt (14.40 grams), and is a size 6 3/4.

Vintage Platinum Santa Maria Aquamarine Diamond Ring. This stunning piece is centrally set with a rectangular stepped cut "ocean blue" so called Santa Maria aquamarine, measuring 21.00 x 14.60 x 9.60mm and weighing an impressive 22.85 carats. Flanked by emerald-cut diamonds totaling 1.55 carats combined, this ring is masterfully mounted in handmade platinum, weighing 9.30 Dwt (14.40 grams), and is a size 6 3/4.