Ritani for Forevermark Channel Diamond & Milgrain Platinum Engagement Ring Mounting 1RZ4411.  This engagement ring mounting is made of platinum and the prong setting will hold a 2 carat round-cut diamond.  There are three round-cut white diamonds set into the undergallery of the center stone and channel-set round-cut white diamonds on either side of the shank with milgrain detailing.  Total diamond weight without the center diamond is 0.13 carats.