Gav, take a look in ernest Jones, thats where we got mine from, i think it was about �250- its not a standard engagement ring, in fact its a white gold wedding ring with diamonds
http://www.ernestjones.co.uk/webstore/detail/R /3511782/
and its beautiful. Its just a little bit different from the standard cluster or solitaire.
depends on what kind of gal you've got, is she an old fashioned romantic? She might like an old victorian ring then-i.e pawn shop.
Its the thought that counts anyway mate!! I bet she won't give a monkeys how much it cost...