Sterling Silver Cubic Zirconia Three Stone Promise Ring. This gorgeous promise is ring is a beautiful symbol of your love and commitment. With a sparkling cubic zirconia to represent your past, present and future, this sterling silver three stone ring is sure to capture her heart. Buy as a pre-engagement ring or as an expression of your enduring love. Fields is supporting Make-A-Wish in 2022. A percentage of all non-branded silver jewellery sales during this period will be donated to Make-a-Wish.