21 Inch Necklace in 18k Yellow Gold.  This 21” 18k yellow gold chain necklace is an expression of fashion and modernity in the best sense. Thicker, blocked chain links mix with open, circular links to create a beautiful structural pattern. This chain will accentuate the collarbone and will warm up any attire for any season. This necklace is a great piece of jewelry for any well-rounded collection!