A Diamond Grading Report confirms that the diamond is genuine, and records each of the characteristics which contribute to its quality. The certificate is the identification document of that particular diamond, and lists the specifics of the diamond accompanied by a comprehensive drawing. Examination is undertaken by specialists of internationally known and independent gemological institutes, which purely grade the characteristics of the diamond. The diamond is then given an individual reference number which appears on its certificate. A Diamond Factory diamond contains this certificate number and the trade mark DIAMOND FACTORY engraved by laser on the girdle of the diamond. This can be viewed under x 10 magnification. All our diamonds are individually signed by us. We want you to be completely confident about your choice.