I have taken several of my David Yurman rings to be sized by Aram. He is a absolutely the best. Everything he's sized has been perfect. Aside from being so professional and kind, he's also honest. I have a moon quartz ring that apparently cannot withstand heat during the sizing process. He's been honest in telling me that sizing the ring could damage it. I will take him at his word.
His prices are very reasonable and he is fast. So efficient. He will usually finish the job ahead of schedule. He'll even size a ring the same day if he can. Huge bonus.
Very sincere person who clearly loves what he does. I wouldn't go anywhere else.