Ring in yellow gold, rose gold, platinum and diamonds

Diamond ring in rose gold, 18k yellow gold (750/1000), and platinum (950/1000). One old-cut diamond weighing approximately 0.56 ct. Twelve old-cut diamonds weighing approximately 0.09 ct each (six diamonds weighing approximately 0.01 ct and six others weighing approximately 0.005 ct). Total diamond weight: 0.65 ct. Width at the top: 1.27 cm. Ring size: 52. Total weight: 10.27 g. Owl and mascaron hallmarks. Excellent condition.