Popular Science Film - Color Levels of Subdivided Yellow Diamonds

Choosing yellow diamonds not only determines the color, but also grades the color according to intensity.

The yellow diamonds in the general diamond grade, from low to high, are: Fancy Light Yellow, Fancy Yellow, Fancy Intense Yellow, Fancy Deep Yellow, and Fancy Vivid Yellow. Although yellow diamonds are more common, yellow diamonds that reach the vibrant color level are rare and difficult to obtain. According to the American Gemstone Association, less than 5% of the identified yellow diamonds are bright yellow diamonds. To purchase yellow diamonds, it is necessary to recognize the certificate issued by the institution, which is a basic guarantee for the buyer. Currently, well-known and authoritative laboratories include the American Gem Association (GIA), the Belgian Diamond High Class Council (HRD), and the International Gem Institute (IGI), among which GIA is more authoritative in the identification of colored diamonds and has the largest market share.