9.5 mm (3/8") wide Tungsten Chain Bracelet & Necklace Gold Ion Plated – 8", 9", 10" 20", 22”, 24" & 30" 22” weights about 230 grams 24" weights about 260 grams Mirror-Polish Finished Solid tungsten carbide, cobalt free. Never Scratch and Corrosion Resistance. The only way to scratch it is with a diamonds coded polishing wheels. Tungsten is the only rare and exotic metal that can be permanently polished. As long as the tungsten does not in contact with chemical, like acid, at all time, the plating will last for long time Secured Stainless-Steel Lobster Lock. Great for gift! USA buyers. We are located in Los Angeles, California and we ship fast! We recommend buyer to buy insurance for all USPS First Class Mail Package. We provide 30 days no-question ask return guaran.