Extra large white ribbed cockle shells for crafts, are sold in a bulk Case of 20 kilos (44 pounds).  White Cardium Shells, or Ark Shells, Anadora Scapa, measure approximately 2-1/2 to 3 inches.  .These shells are thick and solid, slightly longer than high and have between 15 and 20 ribs running vertically along the shell.  The outside of the shell is white with patches of light brown and the inside is white and often tinged in light yellow.  Andora Scapa shells are widespread in the indo-West Pacific, from East Africa to Polynesia. Also found in Japan and Northern and Eastern Australia.  Our white ribbed cockle shells are Real - Not imitation.  They will have natural imperfections from living in the oceans.