Dazzle her with this preset moissanite and diamond engagement ring featuring a halo design and side stone accents. With approximately 0.88 carats of moissanite brilliance and diamond flash this 18K white gold setting will set her heart ablaze. One square. cushion cut moissanite of approximately one half of a carat is accented by the beloved halo design. in addition to the shine of a single row of ideal cut diamonds running down the rings band.