Sterling Silver and Blue Topaz Mermaid Necklace Pendant with 18" Box Chain Blue Topaz is the Birthstone for December 16"-18" Adjustable Box Chain Included Gemstones may have been treated to improve their appearance or durability and may require special care. A Lovely Gift from the Hawaiian Islands From Honolulu Jewelry Company, Honolulu, Hawaii 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! All our diamond suppliers confirm that they comply with the Kimberley Process to ensure that their diamonds are conflict free.