Mercer Kristi Mercer has joined Congress Jewelers as its jewelry appraiser. She trained with the Gemological Institute of America and is certified in both diamonds and colored stones. In addition to providing insurance appraisals, Mercer deals in estate and previously owned jewelry. She is available by appointment at the Congress Jewelers locations on Sanibel Island, on U.S. 41 in Bonita Springs, on Fifth Avenue South in Downtown Naples and in Coastland Center in Naples. Mercer previously designed and produced handbags under her own label, Tiger Lynn Handbags.