Diamond certification — also called a diamond grading report — is a detailed analysis of the diamond’s quality and distinguishing features including its color grade, carat weight, cut grade, clarity grade, and notable blemishes or inclusions that contribute to the clarity grade. A diamond certification may also list any treatments or enhancements used on the stone, and sometimes its geographical origin. The report does not list any monetary values including the retail price paid, the resale value, or the replacement value.  An appraisal, by contrast, comes down to monetary value — either for insurance purposes (replacement value) or to sell (resale value). It will usually include major distinguishing characteristics and a simplified version of the stone’s grading information.  Because the prices of diamonds fluctuate, it’s recommended to renew an appraisal every five years. The individual diamond will never change, though, so the diamond’s grading certificate should be relevant for life.