The large Adina signature circle necklace is a timeless classic. Wear it solo or layer it. I currently have all 3 Size Signature Circle necklaces available in my closet. It is in mint condition and very shiny. It’s sterling silver. It has only been worn at most three times. The large signature circle measures 2 inches in diameter and the chain is adjustable from 15 1/2 inches at its shortest to 17 inches long