3/8 Ctw Octagonal Shape Semi-Mount Round Cut Diamond Engagement Ring in 14K White Gold If you are unsure of the size and weight of the center stone that you wish to have on your ring or want a smaller or larger karat stone installed, a semi mount ring like this one would be ideal for you. The rest of the ring is already styled. This one features an octagonal shape mount with a center that can hold an Emerald cut diamond of your choice. Surrounding the center mount are 22 pave set round cut diamonds. The shank is embellished with 20 pave set round cut diamonds, 10 each on either side, while the gallery is encrusted with another 22 round cut diamonds. A milgrain finish is offered to the rims and sides. The ring is molded in 14 karat white gold. This ring invites your choice of center stone ranging from 0.60 carat to 0.85 carat. Total diamond weight is 3/8 ctw.