My Fiancé recently bought an engagement ring from the Diamond District. we visited The Gemological Appraisal Industry for validation. We scheduled an apt and were able to see Mark right away. He was professional and very knowledgeable. He was able to explain the ring to us and answered all additional questions that I proposed(I had tons). Prior to Visiting GAI we had called a several places and he was by far the cheapest! He told us that we got a great deal on our ring and that gave us a peace of mind. Great experience, and we will definitely visit him again for future purchases. Highly recommended.