You don't need to be Mary, Mary –– whoever that was –– quite contrary to have cockle shells lining your necklace, and all in hallmarked 22K gold.
See, this one's a formal arrangement of dainty cockle shells made of twisted wire, granules and chhela flat tar. There are chhela topas between each. Everything's attached to an x-phul tipki chain with a ball border.
The triple-ball finial on the shells is not just for decoration ; it also protects the delicate filigree. Amazingly, the necklace has no ball-jhur, that which is a GF standard. All in all, a graceful, happy, set that pleases with its discipline and delights with its delicacy.