This ring is made from Sterling Silver & is Fully“J” backed. The Gem grade Triplet Opal is 14x10mm Oval & the design is basically plain on the sides of the shank . The Hand Cut Natural Triplet Opal is from the “Fifteen Mile” Field at Cooper Pedy in South Australia. The Quartz cap on the stone is very hard & scratch resistant. We offer a lifetime guarantee on the stone against lifting due to water damage , if this occurs the stone will be replaced free of charge. This Ring is currently size “X” or 11 5/8 US” but can be resized for free. It is a stunning looking Ring.