All else being equal, diamond price increases with carat weight, because larger diamonds are more rare and more desirable. Learn about carat weight before starting your purchase decision with this 1-minute video by GIA.
An informational video about how the Gemological Institute of America grades diamonds and provides consumers with unbiased diamond grading reports. A GIA diamond grading report will make you sure of your diamond's value and your diamond's quality. Learn more about diamond grading reports at http://gia4cs.gia.edu