Yellow gold, sapphire and diamond ring

Ring set with a sapphire and diamonds. In 18k yellow gold (750/1000). One oval-cut sapphire, weighing approximately 0.76 ct, surrounded by ten marquise-cut diamonds, totaling approximately 0.30 ct (each diamond weighing approximately 0.03 ct). Width at the top: 1.77 cm. Ring size: 49. Total weight: 5.20 g. Eagle's head hallmark. Excellent condition.