Cockle greeting card (8 ratings) £1.50 Quantity: at £1.50 each Add To Basket 25 in stock. This lovely card is of a cockle on the beach. Each card is 10cm x 10cm square (100mm x 100mm) and printed on 355 micron card. Each card is left blank inside for your own message and is supplied with a white envelope, all packaged together in a cellophane bag. Other card designs are available.