Genuine Natural Opal & Diamonds - One large central Oval cut 8x6mm (0.32"x0.24") Opal and six round cut 2.5mm (0.1") Diamonds weighing a total of 0.30ct. Each stone is individually selected and securely claw set in this ring by Expert English Jewellers. Each stone is Natural and therefore unique so they have to be carefully selected to ensure they match in color and clarity. The contrast of the Opal and the sparkling Diamonds set against the Polished 9ct White Gold is very eye catching indeed. Completely made from Solid English 9ct White Gold Hallmarked by the London Assay Office which confirms the rings authenticity. The Hallmark includes the 375 marking plus the Leopards Head and the Royal Crown.