Sterling Silver White Black and Tanzanite Cubic Zirconia Dragonfly Necklace - 18 Inch - in Sterling Silver - FREE gift-ready jewelry box - Measures 30mm Wide - Charm/Element Width: 30 mm - Width of Item: 30 mm - Charm/Element Length: 25 mm - Length of Item: 18 in - Chain Length: 18 in - Chain Width: 1 mm - Clasp /Connector: Lobster (Fancy) - Finish: Polished - Chain Type: Cable - Feature: Solid - Engravable: Not Recommended - ::: [ Potential Enhancement Methods: cubic zirconia ] - Synthetic. Some are covered with a product that makes the stone more durable. ::: [ Care and Handling: cubic zirconia ] - Clean with warm soapy water and a soft cloth. ::: ::: [ Potential Enhancement Methods: tanzanite ] - Usually heated to improve appearance. ::: [ Care and Handling: tanzanite ] - Do not use ultrasonic cleaner or steamer. Avoid sudden temperature changes. Clean with a damp cloth or soft brush. :::