Yellow gold and sapphire ring

18k yellow gold (750/1000) ring. One unheated oval-cut sapphire, weighing approximately 0.74 ct. Twelve brilliant-cut diamonds, totaling approximately 0.12 ct (each diamond weighing approximately 0.01 ct). Width at the top: 0.37 cm. Ring size: 54. Total weight: 5.19 g. Eagle's head hallmark. Excellent condition.