I had such a good experience with Washington Diamond. I had fallen in love with a curved wedding band design they had on their website that looked like it would complement my custom engagement ring perfectly - both the depth of the curve and the milgrain details were as if it had been made with my vintage-inspired bezel engagement ring in mind.
I had another ring with small diamonds in it that I never wore, and asked Walter if Washington Diamond could use those diamonds in the wedding band. He quickly told me it would be possible, and using my own diamonds knocked the price of the ring down by about half! The diamonds in my ring were slightly larger than the one in their design, but they just let me know that and went ahead with the production of the ring. This was so appreciated, considering that another jeweler in DC had quoted me significantly more for a ring that wouldn't have been as unique and special, citing labor costs for taking the diamonds out of the old band. Washington Diamond held onto my engagement ring to ensure the wedding band would fit it perfectly with it, and gave me a discount on resizing the engagement ring as it was slightly too big. The whole process took about two weeks (it would have been one except a couple of people were on summer vacation), and the responsiveness and professionalism of the staff were wonderful. Walter and the other staff were courteous and warm throughout the process. They responded within a week to my request for an appraisal I could use to have the ring insured, and in general were just great to work with. The store itself is about a 15 minute walk from the metro, so it's not difficult to get to without a car - I'm looking forward to having a new project so I can go back!