Platinum Brilliant Cut Diamond Set 4mm Full Wave Channel Set Wedding Ring. This Ring is 4mm Wide With a Total Diamond Weight between 0.38ct-0.51ct depending on Finger Size. Diamond Coverage is 100%, With a Diamond Specification of G Colour & VS Charity. Also Available in 18ct Yellow Gold, 18ct Rose Gold or 18ct White Gold. Prices Based on a Finger Size A-Q.