Uneek Signature Collection Halo Radiant Diamond Engagement RingHow to hold a 6. 50 carat radiant cut center stone? With a rich triple shank of micropave diamonds, of course This dazzling piece from Uneek's Signature Collection is such a hit, proving once and for all that there's ladies out there who can't get enough sparkle, and that there's men out there who are very willing to give it to them.