This is a Ladies 18ct Yellow Gold Horizontal Oval Opal with Round Brilliant Cut Diamonds Halo Ring.
There is 1 Opal and 14 Diamonds in this ring.
Pre-owned.
Hallmarked. 
Size: N
Weight: Approx 4.88g
Ring sizing is available upon request.
Sensible price offers will be considered. 
LADIESCOUNT1.