Oregon Blue Opal, Bolivian Amethyst Platinum Overlay on Sterling Silver Ring Size O Description The Platinum Finish overlay Sterling Silver ring shank has an open gallery. There are two Marquis cut Bolivian Amethyst prong set, one on each shoulder. The oval Oregon Blue Opal (2.00Ct) cabochon is prong set. Total Gem Weight 2.250 Ct Size O Brand New in Packaging RRP £140