The term 'RING INSERT' is a type of jewelry item that consists of a ring and an insert. The most common type of ring insert is a SOLITAIRE, which is a single gemstone set in a metal band. The GEM is usually a diamond, but can also be other precious stones such as rubies, sapphires, or emeralds. The metal band can be made of gold, silver, or platinum. Ring inserts are often used as engagement rings or wedding bands.