Hallmarked: 18ct Gold 
Assay Office: London 
Date: 1994
Makers Mark: E&HH
Size: UK O US 7.5 EU 56
Weight: 5.4g
Width: 5mm
Diamonds: 0.60ct Total Diamond Weight 
There is a small chip in one of the diamonds. Not very visible but I've reflected this in the price. If the chip wasn't there, I'd price at £695. 
Good clean Vintage condition.  Boxes in pictures are not included. Resizing available.