This 18k white and yellow gold semi-mount engagement ring features 50 round brilliant cut diamonds, totaling 0.38 carats, set in a halo around the center stone, as well as down the shank, accented by 2 marquise shaped diamonds, totaling 0.26 carats, set in yellow gold. 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.