- 18K Gold Plating - Solid Brass Base - Custom Design By CAMILLA - Cubic Zirconia Crystal Details - Adjustable Length At Closure - Length: 37cm Our Gilded Realms Leopard Necklace is a amulet of power and grace. Inspired by Art Nouveau decor, it is handcrafted in solid brass with 18 karat gold plating, inlaid with crystal detailing.