Necklaces are 16" (17" w, extension) unless otherwise noted. The necklaces are either made with silk thread, antiqued steel or antiqued brass chain. The cross measures 1 7/8" x 1 1/8". The findings used in the jewelry are brass that has been silver plated and then antiqued. Firefly is privileged to integrate the worlds finest crystal into their designs: Swarovski. The Firefly Jewelry company has a deep love of color. Swarovski Elements precision cut crystal comes in such a wide palette of innovative colors that it inspires Firefly's imagination when planning out new designs.