The 18" neck wire is sterling silver with a lobster catch, and has a flexible cable for wearing comfort.
Neck Wire, Silver ID:  Neck Wire S$16.00
The high quality diamond-cut curb chains are available in sterling silver with a lobster clasp, or lacquered copper. Specify 20" or 24" length.
Chain, Silver ID:  Chain S$16.00
Chain, Copper ID:  Chain C$10.00

Neck Wire and Chains