This marquise 12.0 x 6.0mm lab-created blue sapphire and lab-created white sapphire ring is set in 10K gold. Due to the nature of pre-owned jewellery, the ring you choose may have been previously sized. Ring styles from our pre-owned jewellery 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.