This 10K yellow gold box chain offers luminously polished facets and a silky smooth look. At a 0.45 mm thickness this chain is available in an 16 18 and 20 inch length. Perfect for pendants and can also be worn alone. Includes a spring ring clasp to uphold strength and comfort. - This chain is made with real 10k yellow solid gold and is stamped with the appropriate 10k metal stamp. It will not tarnish or change color as it is real gold. - Box style gold chain necklace good for wearing it alone or with pendants. - The necklace's thickness is at 0.45 millimeters or 0.017 Inches. A thin and lightweight chain necklace making it a delicate piece of jewelry - Necklace has a spring clasp and has a high polished finish that gives it a shiny look - Necklace Comes In a Gift Box