Very bright Blue-green rolling colour crystal opal from Coober Pedy, framed in 18ct gold with feature diamond either side. Designed and handcrafted by Robert Pearce, fellow of the prestigious 'Gold & Silversmiths Guild of Australia'. — 6.80ct Coober Pedy solid Opal, 2 – 0.15ct E VS round brilliant natural diamonds, 18ct yellow gold, Measurement: 22mm long.