This delicate double monotone chain necklace comes in three versions: gold, rose gold, and sterling silver. The chain is adjustable, and can be worn at or between 20.0″ and 21.3/4″. The small square near the clasp is approximately 3/16″ in diameter. Materials: 14k gold-fill (14k gold over brass core/no nickel) and sterling silver (.925). All materials are hypoallergenic. This necklace was designed in San Francisco and is handmade in our Upstate New York production studio.