Halo Engagement ring set with a 3 ct round SUPERNOVA Colorless Moissanite. Shank Width: 1.8mm Moissanite Halo: 15, 2mm rounds, .45 ct SUPERNOVA colorless moissanite stones are cut just for you upon order. They take 3-4 weeks to deliver to us for setting. Approximate time to produce and ship - 4.5 weeks. -------PUREQG