Solitaire ring in white gold and diamonds

18k white gold ring (750/1000). Set with 7 diamonds: 1 brilliant-cut diamond weighing 0.15 ct; 6 brilliant-cut diamonds weighing approximately 0.30 ct each (approximately 0.05 ct each). Width at the top: 0.70 cm. Ring size: 54. Total weight: 1.80 g. Excellent condition.