Montana Silversmiths XOXO Crystal Barbed Wire Jewelry Set na Made in USA or Imported All jewelry has a one (1) year limited warranty on manufacturing defects when accompanied by a receipt. You can maintain your silver brilliance with an occasional wipe of a damp cloth. DO NOT use chemical or abrasive cleaners. Finished with "Montana Armour" Tarnish Protection Chain Measures 15" Long with a 3" Extender. Pendants Measure 5" Long and 1/2" Wide. Earrings Measure 1 1/4" Long and 1/2" Wide. Earring posts are hypo-allergenic surgical steel for additional strength.