18ct Yellow Gold 4 Claw Single Stone Diamond Ring set with The Royal Asscher Round Brilliant Cut Diamond. Each diamond has 74 facets cut to the exacting proportions and parameters of its patent, rare and hand finessed. Royal Asscher Diamonds offer an unrivalled selection of diamond shapes, this Royal Asscher Round Brilliant Cut is Certificated, Carat 0.42ct, Colour G, Clarity VS. The Royal Asscher Round Brilliant Cut is the most enduring popular classic diamond cut with extra head turning sparkle. Faceted to remove some of the darker elements seen in traditional round diamonds.