This gorgeous necklace is handcrafted using a 30mm x 20mm glass cabochon set within a silver tone setting. The necklace comes with a 24 inch, nickel free silver tone chain with a lobster clasp, but if you would prefer another length, please specify. The total length of the pendant, including the bail, measures 2 5/8". The back is hollow. This item is water resistant, but I would not recommend showering, swimming or other prolonged exposure to water while wearing it to prevent any damage.