Cushion-Shaped Halo Diamond Engagement Ring With Twisted ShankRich textures, romantic details. Likes tendrilled vines entwining each other in a garden, this engagement rings shank interlaces diamonds with smooth, polished metal while the round diamond center stone is presented within a cushion shaped frame of pav diamonds for an extra layer of sparkle. The finishing touch: a single, perfect surprise diamond at the base of the setting. This design can be customized based on stone shape and metal preference.