Some of the diamond pictures found on this site were used as reference only from the following sites:
If you are interested in learning more about diamonds and how they are graded than I would strongly recommend checking the following sites out.
This is the Gemological Institute of America homepage. You can find plenty of resources that will help you gain experience in the diamond field.
An amazing site that will walk you through step by step on just about anything. The diamond articles goes in depth, and they've also got great illustrations.
To contact the creator of this site please e-mail at Vw63bug@ufl.edu .