Shamrock Necklace Marble & Marcasite 18&rdquo; Rolo Chain Irish Made A sterling silver shamrock necklace with Connemara marble & marcasite. Nickel and allergy free! Measures approximately 3/4" tall x 1/2" wide and comes on an 18" silver standard chain. Connemara marble is naturally occurring, so each piece varies in color. Crafted in Co. Dublin, Ireland by Solvar. You can return this item for any reason and get a full refund: no shipping charges. The item must be returned in new and unused condition. Go to Your Orders to start the return Print the return shipping label Ship it!