5/8 ctw Cushion Shape Split Bypass Shank Round Cut Diamond Semi-Mount Engagement Ring in 14K Yellow and White Gold With the freedom to choose the center stone and cut down on overall costs, a semi-mount diamond engagement ring becomes a pocket-friendly buy. You can select the weight and size of the center stone to suit your budget. If you go for this semi-mount ring, you will have to choose a 6x6MM cushion cut center stone of 0.85 ctw to 1.20 ctw. The ring features a prong raised 14 karat white gold cushion shape center mount to house the center stone. Pre-decorated are 21 each prong set round cut diamonds, total 42, on the bypass arms, and 10 each prong set round cut diamonds, total 20, on the other either side arm. The semi-mount ring is carved in 14 karat yellow and white gold. Total diamond weight is 5/8 ctw.