I don't buy a lot of vintage rings, but this one has a comforting rounded chunk about it that I couldn't resist. 
A solid number, Channel set with a line of bright princess cut diamonds. 
Full UK hallmark for 18ct gold, Birmingham 2000. 
Weight approx 5.9g 
Width approx 4mm 
Depth approx 2.3mm 
Diamonds total approx 0.25ct (calculated in setting) 
Finger size O (approx US size 7.5) 
Very good vintage condition - some patina. Engraved inside "27th July 2001"