A carat is a measure of a diamond’s weight and is one fifth of a gram. The larger the carat weight, the more rare and valuable the diamond. A diamond’s physical appearance is not only influenced by its carat weight, but the quality of its craftsmanship also has a significant impact. Properly proportioned diamonds will look larger and more beautiful than most poorly cut diamonds because of the brilliance.
Color is graded on the lack of color present in a diamond. Color found in diamonds presents itself as varying hues of yellow and brown. The less color present in a diamond, the higher the color grade. Color grades range from D-Z with D being colorless or the highest grade.