Editing Diamond cutting (section)

=====Color retention=====
[[Image:DiamanteEZ.jpg|thumb|right|The 253-carat [[Oppenheimer Diamond]]—an uncut diamond does not show its prized optical properties]]
In colored diamonds, cutting can influence the color grade of the diamond, thereby raising its value. Certain cut shapes are used to intensify the color of the diamond. The radiant cut is an example of this type of cut.

Natural green color diamonds most often have merely a surface coloration caused by natural irradiation, which does not extend through the stone. For this reason green diamonds are cut with significant portions of the original rough diamond's surface (''naturals'') left on the finished gem. It is these ''naturals'' that provide the color to the diamond.