Sterling Silver With 14k Blue Topaz Necklace - 1.74 Carat Gemstone Weight in Sterling Silver - Product Attributes: - Antique finish - Lobster Claw Closure - - FREE gift-ready jewelry box - Charm/Element Width: 12 mm - Chain Length: 18 in - Clasp /Connector: Lobster - Finish: Antiqued - Feature: Solid - ::: [ Potential Enhancement Methods: blue topaz ] - Usually irradiated and heated to produce color. Some topaz may be coated with a thin film of minerals applied through heat. ::: [ Care and Handling: blue topaz ] - Clean with warm soapy water and a soft brush or cloth. :::