Solid 18k gold Solid crystal opal ring! Wonderful solid NATURAL 7.25mm X 5.19mm Lightning Ridge Australian crystal opal showing 3.3 out of 5 bright dancing and flashing green colours. All set into an elegant 4 pronged solid 18k yellow gold ring, what a beautiful gift this would be. This gorgeous ring is currently size N , (US size 6.5) but for the lucky new owner, sizing between J and Q (4.75 and 8) will be done free of charge. Of course this beautiful ring comes gift boxed, and what a perfect gift it would be, or perhaps that opal engagement ring.