A fabulous oval cabochon cut black opal doublet flashing with green/yellow/orange flashes against a dark grey background. Measuring approx. 16.00mm x 11.00mm, the opal is flanked at the top and bottom by an old cut diamond - one measuring approx. 2.70mm x 3.00mm and one measuring approx. 2.80mm x 2.90mm.  
 
The total carat weight of both diamonds is estimated 0.20ct with colour and clarity assessed as K/L and VS.  Yellow rub over settings with millegrain border to split shoulders and plain polished "D" shaped band.  Stamped and testing as 9ct yellow gold.  Gross item weight 3.92gms.