Based on the reviews here, I decided to get my ring appraised by Patrick Davis. I was not disappointed! His fee is very reasonable/competitive ($100) and you get a really nice document at the end. He only accepts cash or check. His office was a bit far for me, but it was worth the drive to Culver City. I needed my appraisal faster than the normal 3-5 days for insurance purposes, and he was nice enough to send me an electronic copy the next day. Definitely a thumbs up!