The seamless mokume gane collection was pioneered by Chris Ploof Studio.
Prior to seamless rings, all mokume gane rings were patterned on flat sheet
and then formed into a ring, which resulted in a seam that disrupted the
natural beauty of the pattern. Chris was not satisfied with this, and set
out to change the way mokume gane rings were made. Now you can have a ring
that is a perfect marriage of two metals formed in an unbroken circle.