1/4 ctw Emerald Shape Triangle Cut Diamond Semi-Mount Engagement Ring in 14K White Gold It's best to go with a semi-mount engagement ring if you wish to have a center stone of your choice installed on it. While the rest of the ring comes pre-decorated, the space for the center stone is left vacant for you to choose. Simplistic in design, but elegant in look, the ring features a plain shank and a raised triple mount centerpiece. The centerpiece displays a slightly raised center mount, where a stone of your choice will be installed. This will be an Emerald cut center stone in the range of 0.40 ctw to 0.55 ctw. Preset on slightly lower mounts, a prong set triangular cut diamond each, flanks the center mount on either side. The semi-mount engagement ring is crafted in a polished rhodium finish 14 karat white gold. Total diamond weight is 1/4 ctw.