Piaget 18k Yellow Gold 3.50ct Heart Shape Amethyst Gemstone Solitaire Ring. A vibrant yellow gold ring by Piaget, it is crafted from solid 18k yellow gold with a fine polished finish, the front of the ring boast a large heart shape form with an intense heart shape amethyst gemstone in bezel setting with a wide tapered shoulders and a heart shape form band. This ring is gorgeous and will look fabulous on your finger. It bares Piaget hallmark as well as metal content. Material: Solid 18k yellow gold Hallmark: Piaget A71189 1997 Measurements: Top Size: 13mm wide x 13.5mm high Ring Size: 5 Amethyst: 3.5 carats Weight: 12.8 grams Stock#: 27608