Handmade one at a time with porcelain clay. These are molded around actual scallop shells that I foraged on the beach in Nantucket last fall. Each one will be slightly different because I make them by hand. They have a small round "foot" on the back so that most of the underside is glazed as well. Perfect for holding salt, soap, candles, treasure from the beach, use for collecting pits on a charcuterie board, fancy bites, etc. Dishwasher, microwave safe, lead free.