If you are interested in having a stone of your choice put into a ring, then a Semi-Mount engagement ring is what you should get. Again, if you like to have a ring that is simple yet elegant, then something like this should be in your list. This Semi-Mount diamond engagement ring lets you have an Emerald cut center stone of your choice, ranging from 0.20 carat to 0.30 carat. Besides the center mount, the ring comes pre-decorated, with a tiny halo of 12 prong set round cut diamonds below the center mount. Apart from this, 18 prong set round cut diamonds, 9 each on either side, adorn the shank. The Semi-Mount engagement ring is sculpted in 14 karat yellow gold. The total diamond weight is 1/5 Ctw.