London blue topaz and diamond ringThis 9ct yellow gold ring is set with an oval cut London blue topaz and two round brilliant cut diamonds. London blue is a beautiful shade of aegean blue an deep intense cobalt blue with a hint of teal. The oval cut gemstone measures 8mm by 6mm and weighs approximately 1. 75ct. Each diamond measure 3. 4mm in diameter and weighs 0. 15ct giving the ring a total diamond carat weight of 0. 30ct. They are G colour VS clarity. This elegant three stone ring