This 14-karat white gold ring mounting features a 4-prong center mounting that accommodates one .20-ct. (3.7mm, approx.) round faceted stone. The ring has a twisted split-shank design and is semi-mounted with 24 .4-pt. accent diamonds (SI clarity/G,H color; 9.6 pts. TW) in prong mountings. Cut a seat in the mounting to accommodate your stone, then burnish the prongs over the stone to secure it in place.