1/6 Ctw Square Shape Diamond Semi-Mount Engagement Ring in 14K Yellow and White Gold There can be nothing better than giving her a diamond engagement ring. You can make it even more special by choosing a semi mount ring and adding a center stone of your choice to it. This amazing ring makes a good selection in terms of look and glamour. The ring features a princess cut center mount where you can get a diamond ranging from 0.20 carat to 0.30 carat installed. The mount is surrounded by 16 prong set round cut diamonds, while 16 round cut diamonds embellish the 14 karat Yellow and white gold shank. Total diamond weight is 1/6 ctw.