14K gold chains are available in just about any length but different occasions usually call for chains of various lengths and if a pendant or other piece of jewelry is involved in the design it's likely the size of the pendant and the age of the wearer will impact design choices. As a general rule, long chains will enhance the size of the bust while shorter chains will call attention to a beautiful neckline. A sixteen inch chain will sit just above the collarbones and is considered a short length. A twenty inch chain usually extends over the clothing and can be used for a more dramatic impact.