This gorgeous platinum Art Deco filigree antique design castle engagement ring mounting for a 1/2 carat diamond is carved on the outside of the band with a lovely carved scroll pattern, framed with double millgrain edging on the sides. The ornate engraved filigree castle setting is embedded with 12 shimmering round brilliant full cut diamonds.The crown is framed on each side with 4 round brilliant full cut diamonds securely four prong set into the shoulders of the ring. Total count of round brilliant full cut diamonds in this ring is 20, of VS clarity and F/G color, with a total diamond weight of 0.20 carat for the ring. This platinum engagement ring mounting is sold without a center stone and can be set with your own diamond or gemstone by your jeweler, or you can add a round 1/2 carat diamond above and our jewelers will set the stone to create your custom ring! Measurements are 5.9 millimeters wide at the top of the ring and 2.6 millimeters wide at the bottom of the ring. This unique platinum filigree engagement ring semi-mount is sure to be treasured! Please note: In order to demonstrate how the ring appears when set with a diamond, this platinum ring semimount is displayed with a diamond in the video on this page. This vintage platinum ring setting design does not include a diamond unless you select and add one above.This antique inspired ring mount with no center stone is also available for other center stone sizes in and in other metals.