Curb chain + rolo chain necklace is made with silver plated brass curb chain, and large silver base metal rolo chain. Clasp and components are base metal.
Measurements: Curb chain is roughly 2 1/2" long. Curb chain is 3/18" wide. Lobster clasp is 3/4" wide and 3/8" long. Jump ring is 3/8" in diameter. Total length of necklace including curb chain is 18".