The setting is plated with 18K white gold. It has a bright Heart cut Amethyst 4.2ct, 2 Round shape & 3 Marquise cut White Swarovski crystals all measured 1.4ct. That is total 5.6ct for this setting. Amazing clarity and shimmering facets.. The whole setting of pendant measured 18mm width x 28mm length. The Necklace is in regular 18 inches.