Material: Gold Filled over Brass, Natural Gemstone (Amethyst, Aventurine, Citrine, Clear Quartz, Moss Agate, Rose Quartz) Length: Approximately 17-18 Inches with 2 Inch Extender Width: 12.2mm x 8.7mm x 4.7mm Closure: Lobster Claw Color: 18K Quantity: 1 Piece Lead Free, Nickel Free Each piece is unique; please note that gemstone dimension and length may vary.