Brighton Sparkle Square Mini Post Earrings Brand New Product Details Brand: Brighton Style Name: Sparkle Square Mini Post Earrings Material: The metal is silver plated over a base of solid brass or zinc alloy, finished with a protective lacquer. The central stone is a fine quality crystal (sometimes noted as Swarovski crystal). Earring posts are made with sterling silver. Dimensions: Each earring measures approximately 3/8" in width and drop.