Marguerite ring in yellow gold, sapphire and diamonds

18k yellow gold (750/1000) ring set with a sapphire and 10 diamonds. One marquise-cut sapphire, weighing approximately 0.97 ct, surrounded by 10 brilliant-cut diamonds, weighing approximately 0.80 ct each (each diamond weighing approximately 0.08 ct). Width at the top: 1.37 cm. Ring size: 54. Total weight: 3.10 g. Eagle's head hallmark. Excellent condition.