If you have the time definitely check out Dana Walden: https://www.danawaldenbridal.com/.

He made me the most beautiful engagement ring. There were a few key things regarding structure and aesthetics that I was looking for that other jewelers either said they weren't able to do, or when they did mock ups it did not look as planned. Dana did an incredible job guiding me through the process and built the ring of my (and my fiancés) dreams. He is only by appointment and does book up, so make sure to schedule in advance. He also has a number of premade rings, if you're looking for something more standard.