Attos is a family-run antique and estate jewelry shop that does it all–from buying, to selling, repair work, appraisals, custom design and everything in between! Located in the heart of Portland, Maine and in business since 2002, this jewel of a shop has quite the selection. Are you an online shopper? They have a curated selection listed on Etsy, Ruby Lane and their website. New arrivals are also posted on their Instagram & Facebook.