I love to share with you this real statement piece!
Crafted entirely from Sterling Silver, each ring made will vary to the next. The 'pebble' that sits on top is created by heating the Silver to melting point, and the textured surface is chosen by the molten Silver itself.
As a guide to the dimensions, the widest diameter of the 'pebble' on the ring pictured is approx 21mm, so your's would be something similar. She's a weighty little number :)