Think old-world elegance meets modern romance. This black onyx necklace is 18K Gold Plated with Black Onyx and White Topaz & gemstones. 18K Gold Plated Stainless Steel Black Onyx and White Topaz gemstones Pendant is approx 19mm x 10mm Pendant has a clip-on fastening Chain is 17" (43 cm), extends to 19" (48cm)