Marquise ring in yellow gold and emerald

Ring set with an emerald and diamonds. In 18k yellow gold (750/1000). One oval-cut emerald, weighing approximately 0.34 ct, surrounded by 29 brilliant-cut diamonds, totaling approximately 0.86 ct. Weight of each of the two main diamonds: approximately 0.16 ct. Weight of each of the smaller diamonds: approximately 0.02 ct. Width at the top: 2.44 cm. Ring size: 57. Total weight: 6.12 g. Eagle's head hallmark. Excellent condition.