An ideal choice for buying a customized engagement ring that involves the least hassle, is to go for a semi-mount ring. With this choice, you only need to select a center stone, as the rest of the ring comes pre-decorated. This semi-mount diamond engagement ring makes for a fine choice. It features a 2-tier oval shape center mount, with the top mount in the middle for the center stone, which must be an oval cut stone, ranging from 0.20 carat to 0.30 carat, Pre-installed on the lower tier are 16 prong set round cut diamonds, haloing the center stone. A plain yellow gold straight shank offers a finishing touch. The engagement ring is framed in 14 karat yellow and white gold. Total diamond weight is 1/10 ctw.