18ct White Gold Sapphire and Diamond Split Shank Dress Ring V16484. 18ct white gold dress ring set with a single round brilliant cut 0.42ct blue sapphire and diamonds set on the surround and the split shank, with an approximate diamond weight of 0.24ct. Approximate Sapphire Carat Weight: 0.42ct Approximate Diamond Carat Weight: 0.24ct As this ring is of a unique design we may not have your required size in stock. If this is the case we will contact you to advise you of the expected delivery time which could be between 4 - 6 weeks.