A)$259 for this XR0519 ring with a 2.5ct olive green cushion moisanite in SS-- So you need to pay the balance $80($259*0.8-$159*0.8)
https://www.doveggs-seattle.com/products/doveggs-cushion-bezel-setting-solitaire-moissanite-engagement-ring?_pos=2&_sid=1673db466&_ss=r&variant=44786173411574