Zodiac 18K Gold plated over sterling silver. Beautifully made with diamonds for an added sparkle. Thickness is 1.1mm and pendant is 0.74 in diameter. Chain style is a beutiful Rolo Chain that comes in 16″ 18″ 20″ 22″ 24″ As well this beautiful pendant features diamond(s) of 0.02pts each Round cut and all are SI1-SI2 quality. A wonderful necklace to wear on its own or layer it with others.