There are many diamond grading labs that issue certificates such as the Gemological Institute of America (GIA) and the American Gem Society (AGS), the two most widely regarded and recognized diamond grading labs in the world. See 1000's of gemstone silver jewelry items at prices 80% below normal retail prices. If the stone has been set in a ring or other metal ensure that you can see the back of the stone.
Explanation of Cut, Color and Clarity of This Diamond
Cut Quality Ideal cut refers to the angles and proportions of a diamond that satisfy very precise mathematical formulas. The result is that the the ideal cut diamond internally reflects most light from one mirror-like facet to another and disperse and reflect it through the top of the stone. This results in a display of brilliance and fire, thereby placing ideal-cut diamonds higher on the quality pyramid than deep or shallow-cut diamonds.
Color Slight presence of color may be detected in F color graded diamonds by an expert gemologist. The diamonds of this grade are considered colorless. Great choice for the purist. Look for a fluorescence rating of faint, inert, none, or negligible.
Clarity Diamonds of VS2 clarity have very small inclusions grade two. Inclusions VS2 diamonds are somewhat easy for a skilled grader to locate under 10x magnification. Diamonds that are graded VS in clarity are still very impressive looking diamonds under a microscope. Of course nothing is visible at all to the human eye. Such diamonds have a great balance between good clarity and exceptional price.