This is a Ladies Platinum Head on an 18ct Yellow Gold Shank Princess Cut Ruby and Round Brilliant Cut Diamond Trilogy Ring.
There is 1 Ruby and 2 Diamonds in this ring.
Pre-owned.
Hallmarked. 
Size: P
Weight: Approx 2.51g
Ring sizing is available upon request.
Sensible price offers will be considered. 
LADIESCOUNT1.