An opal and diamond ringAn unusual dress ring containing a large oval white opal, 11. 7x8. 3mm. Has an excellent 'play' of colour, and easily seen flashes of various colours, fireglow orange, electric blue, and peacock green. In a rim setting. Each shoulder in this cross over design is set with two 1. 3mm brilliant cut white diamonds, channel set. Head height 12mm, width including the shoulders 15. 5mm, depth 4mm, weight 4. 4grams. The shank is stamped 18K, and tests as 18