Ask for Paul.
You know that feeling of buying a car that you love, but you had to deal with the car salesman to get it? Always remember that you might have that car for a while, but your wife will have her engagement ring forever. So the experience of buying a ring should be part of the enjoyment not a hassle.
That's why you should ask for Paul at Long's Jeweler's in Natick. I went in looking for an engagement ring but actually had a really fun time in doing so. Paul has an extensive knowledge of not only diamonds but the style that your fiance will love but won't fade in time. He's an amazing guy who made this life changing process enjoyable but most importantly personal. I can't recommend him high enough.