Cabochon Pink Sapphire Gold and Diamond Ring Giovanni Ferraris. 18K Gold Ring with cabochon cut Pink sapphires and diamonds by Giovanni Ferraris This gorgeous ring features special-cut pink sapphires that are cabochon cut. Each stone was specifically cut to fit in its exact spot on this ring. There are also a few light color shades of sapphires as well. The center sapphire features the largest stone on the ring surrounded by smaller sapphires and accents of diamonds all throughout. Total weight 24.2 grams.