Beautiful bright blue and green boulder opal vintage ring, set in 18ct yellow gold. The oval boulder opal measures 12.70x8.95x1.95mm and has a concave top with blue and green flashes throughout, weighing 1.30ct. Semi bezel set with 3 bezel/tube set round brilliant cut diamonds each side, a total of six 1.50mm diamonds equalling 0.09ct H SI. Completed on a 1.90mm wide knife edge band. Finger size N. Independent Valuation Supplied.