1/10 Ctw Halo Round Cut Diamond Semi-Mount Engagement Ring in 14K White Gold A lovely diamond semi-mount engagement ring, this lets you select a center stone of your choice for it. The ring features a cushion shape center mount, with a raised prong center that is designed to hold a princess cut center stone ranging from 0.40 carat to 0.60 carat. It is up to you to decide what weight stone you want on it. 20 prong set round cut diamonds come pre-decorated on the cushion shape mount. These form a halo around the center mount, while a plain shank completes the look. The semi-mount engagement ring is crafted in a polished rhodium finish 14 karat white gold. Total diamond weight is 1/10 ctw.