This essential snake chain necklace is made from shiny 18K yellow gold. It is secured with a lobster clasp. This necklace is tarnish-resistant. It does not flake off, lose luster or discolor. It is waterproof. You can take a bath or swim with it. We offer necklaces of 16 inches to 30 inches in length and 1. 2mm, 1. 6mm, 2mm, 2. 5mm and 3 mm width for this model. *** Free velvet gift pouch included. Product ID: 18KSNK666 Metal: 18K Yellow Gold Filled Color: Gold Product Dimension: 16/18/20/22/24/26/28/30/32/34/36/38 inch long * 1.2mm/1.6mm/2mm/2.5mm/3mm wide Weight: 1.2mm x 16 inches: 3.2 gram 1.2mm x 18 inches: 3.7 gram 1.2mm x 20 inches: 4.2 gram 1.2mm x 22 inches: 4.7 gram 1.2mm x 24 inches: 5.2 gram 1.2mm x 26 inches: 5.7 gram 1.2mm x 28 inches: 6.2 gram 1.2mm x 30 inches: 6.7 gram 1.2mm x 32 inches: 7.2 gram 1.2mm x 34 inches: 7.7 gram 1.2mm x 36 inches: 8.2 gram 1.2mm x 38 inches: 8.7 gram 1.6mm x 16 inches: 6.3 gram 1.6mm x 18 inches: 6.8 gram 1.6mm x 20 inches: 7.3 gram 1.6mm x 22 inches: 7.8 gram 1.6mm x 24 inches: 8.3 gram 1.6mm x 26 inches: 8.8 gram 1.6mm x 28 inches: 9.3 gram 1.6mm x 30 inches: 9.8 gram 1.6mm x 32 inches: 10.3 gram 1.6mm x 34 inches: 10.8 gram 1.6mm x 36 inches: 11.3 gram 1.6mm x 38 inches: 11.8 gram 2mm x 16 inches: 9.4 gram 2mm x 18 inches: 10.5 gram 2mm x 20 inches: 11.6 gram 2mm x 22 inches: 12.7 gram 2mm x 24 inches: 13.8 gram 2mm x 26 inches: 14.9 gram 2mm x 28 inches: 16.0 gram 2mm x 30 inches: 17.1 gram 2mm x 32 inches: 18.1 gram 2mm x 34 inches: 19.1 gram 2mm x 36 inches: 20.1 gram 2mm x 38 inches: 21.1 gram 2.5mm x 16 inches: 7.2 gram 2.5mm x 18 inches: 8.1 gram 2.5mm x 20 inches: 9 gram 2.5mm x 22 inches: 9.9 gram 2.5mm x 24 inches: 10.8 gram 2.5mm x 26 inches: 11.7 gram 2.5mm x 28 inches: 12.6 gram 2.5mm x 30 inches: 13.5 gram 2.5mm x 32 inches: 14.4 gram 2.5mm x 34 inches: 15.3 gram 2.5mm x 36 inches: 16.2 gram 2.5mm x 38 inches: 17.1 gram 3 mm x 16 inches: 8.96 gram 3 mm x 18 inches: 10.08 gram 3 mm x 20 inches: 11.2 gram 3 mm x 22 inches: 12.32 gram 3 mm x 24 inches: 13.44 gram 3 mm x 26 inches: 14.56 gram 3 mm x 28 inches: 15.68 gram 3 mm x 30 inches: 16.8 gram 3 mm x 32 inches: 17.92 gram 3 mm x 34 inches: 19.04 gram 3 mm x 36 inches: 20.16 gram 3 mm x 38 inches: 21.28 gram Quantity: One piece of necklace chain Gold filled jewelry is different from gold plated jewelry. Gold filled jewelry is made by heat and pressure bonding a layer (at least 25 micron thickness) of gold to some base metal core. It has all the great characteristics of solid gold jewelry. It does not flake off, tarnish or discolor. Gold filled jewelry is an economical alternative to solid gold. Gold plated is a method of covering another type of metal with a very thin, almost microscopic (usually 0.5-micron thick), film of pure gold by electroplating it. Gold-filled jewelry is much more valuable than gold-plated. As an additional note, 18K gold is more yellow than 14K gold and 10K gold. Note: *** Please always refer to the description for the measurement of the product. Please do not judge the size depending on the picture on your screen. The product may look larger or smaller depending on your screen size. 100% Satisfaction Guarantee We offer 100% satisfaction guarantee for all products we sell. If you are not 100% satisfied, you may always return the product for full refund or exchange within 60 days of purchase. Shipping & Payment All orders are shipped through USPS(Postal Office) from our warehouse in California, USA within 24 hours after your payment reaches us. For International buyers: We ship to all countries. We pay all shipping charge in full before your package is shipped. For international buyers, you may be collected an fee when the package is delivered. Its an importing tax that your government charges to protect your domestic business and job opportunities. Its the buyers responsibility to pay the tax. Contact us The best way to contact us is through eBay message by using eBays "ask a question" link.