I create a single circle out of fine silver wire. The circle is forged, hammered and tumbled for strength and shine and centered on sterling silver chain. It is finished with a spring ring clasp.

The length is 17 1/2". 
The circle is about 18mm.

It's a perfect little layering necklace.
Fine silver is composed of 99.9% silver as opposed to sterling silver which is 92.9%.