These Brand New Herringbone Chains are 100% GENUINE, SOLID 10K YELLOW GOLD and have been professionally tested and stamped 10k. These chains are REAL SOLID GOLD, they are NOT HOLLOW, NOT PLATED, NOT FILLED. The chains fasten with a 10k Yellow Gold Lobster Clasp that is durable and secure. They can be layered, stacked, or worn on their own. Herringbone Chains are especially known for their classic style, shine, and strength. These high quality chains will not tarnish or discolor as they are Pure 10k Gold and MADE IN ITALY.