This 18k white gold split shank semi-mount engagement ring features 48 round brilliant cut diamonds, totaling 0.25 carats, set in a twisted split shank design. This ring is priced without the center gemstone, giving you the freedom to choose what you would like it to hold. This ring is designed to accommodate a round-shaped center. An imitation diamond (cubic zirconia) is set in the center here to aid you in visualizing the final look.