Here for sale are 20 halves of medium sized cockle shells that have been collected off the north west coastline. Each half measures length and width of roughly 3 - 4cms each way. All shells that I sell are cleaned by boiling for an hour, absolutely no chemicals are used in the cleaning process. I also have lots of large and small for sale. The shells that you receive may not be the exact colouring of the shells in the picture as all shells have their own uniqueness and colouring. Thankyou for looking.