Ruby & Diamond Ring. 18ct Gold.Why Not Spread the cost with Klarna or Clearpay? This exquisite 18ct yellow gold ring features a stunning colour Oval cut Ruby, measuring 8x6mm, in claw setting. It is surrounded by 12 brilliant cut diamonds, totaling approximately 0. 24cts. The ring is available in size K and can be adjusted for a custom fit. All measurements and sizes are approximate for accuracy.