A pretty Opal and Diamond cluster ringAn elegant cluster ring featuring a white opal centre stone measuring 6 4mm, displaying a lively and attractive play of colour. The opal is beautifully complemented by a surrounding halo of twelve brilliant cut white diamonds, each measuring 1. 5mm, with an estimated total diamond weight of 0. 20 carats. The ring head measures approximately 8. 3 10. 4mm with a depth of 5mm. Crafted in 18 carat gold, the ring weighs 2. 3 grams and bears hallmarks for