1 /5 Amy: To say I had a horrible experience here is truly an understatement. Derr Jewelry provided the WORST experience out of any product or service I have ever received. I would recommend any jeweler other than him. My partner & I chose Derr to make a custom marquise-cut diamond engagement ring. From the very beginning his customer service sucked. The kicker is that he BROKE the 1.5 carat marquise diamond that was set in my ring. And he had the audacity to accuse me of breaking it! It was confirmed by a GIA-certified gemologist that he broke the stone when he set it, and he knew it, because a diamond makes a loud sound when it breaks. He lied about it and refused to give us our money back. We lost well over $6000 because of this sketchy jeweler. Plus, he made shopping for an engagement ring, something that should be a lovely experience, an awful one. Derr Jewelrys service is deplorable, borderline criminal, and his workmanship is abysmal. DO NOT go here for any reason.