These mokume gane bands can be purchased separately. The size 6.5 ring is $5000. and has a beautifully cut ).52 Ct. SI-1 G color round brilliant cut diamond. The heavy size 11.5 band is 2950. They are made from eighteen karat yellow and 14K white golds with a layer of sterling between the gold layers. They can be made a bit larger or smaller. Ken says "sometimes I am as good as I think I am...."