Real diamonds and real big savings are what Diamond Nexus Labs is all about. They are the world leader in pure carbon created diamond engagement rings. Whether you choose a diamond made in a lab, or a Nexus diamond that looks and acts like a diamond, your ring will last a lifetime and cost a fraction of the competition. If it looks and acts like a diamond, well, it is a diamond. There is a Diamond Nexus Labs money-back guarantee and a lifetime performance guarantee.