The Marc blue chalcedony pendant necklace features a gorgeous mix of metals and textures. The polished blue square chalcedony has rounded edges and is set in shiny sterling silver. The luminous stone is framed by marcasite detailing and a 14k gold plate border. The chain necklace fastens with a polished lobster-claw clasp. Chain length: 18 inches. Pendant dimensions: 1 inch x .5 inch. Metal: Sterling silver, 14k gold plate. Stone: Blue chalcedony, marcasite.