Designer White Gold Large Dome Ring. Size 6

My Mother bought this ring in Italy. If you look close on the last picture you can see the hallmark of the gold and Italian inscription. It's a large, beautiful statement piece. It's not very heavy but looks it! It's a size 6. I'm not certain if this beautiful piece can be sized, so please know your ring size before purchasing it. I'm selling it below cost! It's stunning! Thank you.