1/4 ctw Pear Shape Triangle Cut Diamond Semi-Mount Engagement Ring in 14K White Gold A semi-mount engagement ring is your best bet if you wish to have a center stone of your choice installed on it. While the remaining part of the ring comes pre-decorated, the center mount is left vacant for the center stone, just like the semi-mount diamond engagement ring here. Simple but elegant, the ring features a plain shank and a raised triple mount centerpiece. On the centerpiece is a slightly raised center mount, with a lower mount each on either side of it. The empty pear shape center mount is designed to hold a pear cut diamond in the range of 0.40 ctw to 0.55 ctw. A prong set triangular cut diamond each comes preset on the lower mounts flanking the center mount on either side. The semi-mount engagement ring is styled in a polished rhodium finish 14 karat white gold. Total diamond weight is 1/4 ctw.