The mariner chain - oval links each crossed with a central bar - has the structural integrity that makes it one of the more durable chain styles in jewelry vocabulary. It reads as nautical in origin and contemporary in application, and Rachel Zoe's version in rhodium over brass at 16 inches (with extender) wears as a standalone chain statement or as the foundation of a layered necklace arrangement. Lobster claw clasp. The mariner link is a chain that earns attention on its own - it doesn't need a pendant to justify its presence at the collarbone.