I bought the first place I went to.
I only knew the shape (she told me years earlier) and I knew I wanted better than her family and friends had.. Other than that, I knew nothing, so I was there a couple hours to get a complete education..
Ended up getting her a 1.08 Carat, VVS1 "E" pear shape on a platinum & diamond band. She was very, very pleased and hasn't really stopped smiling since.
Have an idea what you want in quality before you go in, even if it's a generalization.. also, a certified diamond is wise in my opinion.
A great ring and diamond will make an impression she'll never forget. Always nice when you give her plenty of memories of how sweet and wonderful you are.. This way, if you break up, all her friends will already like you
