Help Me Find the Perfect Engagement Ring

I have an idea of what I want, and where to get it, but need someone to go to the Diamond District in Manhattan to get it for me. I was previously married and still have the appraisal of the ring. I want a less expensive ring this time, but I want similar value in terms of what I pay verses what the ring is worth. One pic is the ring style I know she wants. The other pics are the appraisal for my old ring and how much I actually paid.