Marguerite ring in white gold and diamond

Daisy ring set with diamonds. In 18k white gold (750/1000). Central brilliant-cut diamond, weighing approximately 0.30 ct. Surrounded by 16 single-cut diamonds, weighing approximately 0.64 ct each (each diamond weighing approximately 0.04 ct). Width at the top: 1.63 cm. Ring size: 55. Total weight: 6.40 g. Owl hallmark. Excellent condition.