Chandler Necklace. The disc is 5/16 inch and is paired with our link ball chain Sweet and Dainty, this necklace is great for everyday but still has a special feel. All pieces are Sterling Silver or " 14K gold-filled" so it will not flake, peel, or turn weird colors. Gold filled is 100x thicker than gold plated and can be considered heirloom quality. This necklace in 18" in length with 2" extender, making it 18-20 inch adjustable.