twobirch sterling silver contour ring guard with millgrained edges and filigree cut out design with cubic zirconia (0.48 ct., size 8) twobirch this wedding ring guard has 48 round, channel set stones. each band measures 2 millimeters wide. this ring enhancer has 0.48 carats total weight. this ring jacket is made to fit a round, princess, or marquise cut solitaire from 0.25 carats to 1 carats.