1/3 Ctw Round Cut Diamond Semi Mount Engagement Ring in 14K Yellow and White Gold A dashing semi-mount diamond engagement ring, this offers glamour and visual appeal. As it is a semi-mount ring, you can select a center stone of your choice for it. The stone should be round cut, ranging from 0.60 carat to 0.85 carat. This will be installed on the prong raised center mount. Adding to the sophistication is a twin row of round cut diamonds decorating the shank. There is a total of 40 prong set round cut diamonds embellishing the shank, 20 each on either side. The semi-mount diamond engagement ring is crafted in a polished rhodium finish 14 karat yellow and white gold. Total diamond weight is 1/3 ctw.