The pendants are sterling-silver ovals with Cape Cod ladyslipper seashells and Swarovski crystal; the chains are sterling silver, 18 and 20 inches in length. Rosalind Bassett selects ladyslipper shells from the shores of the Cape. Curing and sanding each takes ten days and of course, no two are ever identical. And though they appear dainty, when set on silver they are quite durable.