Each diamond that Hollis & Company sells has been individually selected by Mr. Hollis for its superior beauty and value. For every diamond selected, many more are rejected. Our direct access to some of the largest diamond cutters and manufacturers in the world enables our diamond selection to some of the most beautiful diamonds available and we buy and sell them at tremendous value. We sell only diamonds from legitimate sources not involved in funding conflict and in compliance with United Nations resolutions. Our diamonds are of natural origin and are untreated.