This 6. 0mm square-cut lab-created white sapphire and 0. 14 ct. T. W. Black diamond ring is set in sterling silver. Polished to a bright finish, and custom made to fit her ring size. Due to the nature of pre-owned jewelry, the ring you choose may have been previously sized. Ring styles from our pre-owned jewelry inventory are sold at their current size and cannot be resized at purchase. As this inventory constantly changes, we are unable to state or guarantee the size of any pre-owned ring.