I would like to know the opinion of you experts in this board. My family owns a Belle Époque "multi-purpose" necklace by the Dutch royal jeweler Bonebakker, that used to be convertible into broach/pendant or a tiara, but the tiara frame is lost. Even if there are no opportunities to wear it as a tiara (apart from a family wedding, not in sight) I would like to have it completed. I assume that going to the original maker or another "royal" jeweler would cost more than the value of the piece. Would you go to any jeweler, or just keep it as it is?