JB Marsh Designs, founded by Joan B. Marsh, specializes in the design of fine monogram jewelry. Our signature design is the So-U Monogram necklace, which features a unique custom monogram with an interchangeable necklace. With three necklace collections to choose from, the So-U can be altered for any occasion. This year, JB Marsh Designs has expanded their collection to offer the Mini-Mono and three styles of monogrammed cuffs.