Piaget Salvador Dali 22k Gold Coin 18k Yellow Gold Ring Size 6. This is an authentic ring from Piaget, the coin sculpted by Salvador Dali, the ring is crafted from solid 18k yellow gold and the coin from 22k solid yellow gold depicting a double face on the front. It is fully hallmarked by the designer with the metal content. Material: 18k & 22k yellow gold Hallmark: Piaget 750 Measurements: Top Size: 20mm diameter x 8mm high Ring Size: 6 Weight: 16.4 grams Stock#: 51572