0.30 Carat Diamond Knife Edge Eternity Ring, 18k White Gold, size MA beautifully made eternity ring set with 60 white and lively diamonds in 18k white gold. The knife edge band is pav set with two rows of round brilliant cut diamonds either side of the milgrained ridge. Would make an ideal stacking ring, but is certainly substantial and important enough to wear on its own. There is a 7mm gap in the diamond at the base of the band meaning the ring can be altered if in the future should your finger change size.