Irradiated diamonds
Although diamonds are held In the highest esteem, especially because of their colorlessness, it is the eccentric caprices of nature which in rare cases, also give a diamond imaginative colors, for example, ...
IRRADIATED DIAMONDS
Irradiated diamonds are diamonds that have been exposed to radiation. This changes the diamond's color (as the radiation changes the crystalline structure of the diamond). The change in the diamond is permanent.
Irradiated Diamond: A diamond which has been exposed to radiation.
Knot: An included diamond crystal which reaches the surface of a polished diamond.
Irradiated diamond: A diamond that has been subjected to bombardment by electrons, neutrons or other atomic particles. Its purpose is to make the diamond's color more attractive and desirable.
J Top
Jager: Term for a fine white diamond.
irradiated diamonds Artificially treated to enhance or change the color of a diamond by way of bombardment. These treatments are commonly used on diamonds that have an undesirable tint, to improve their value and salability.
1914, Irradiated diamonds by immersion in radium bromide, (Pough & Schulke as reported in G&G spring 1951)
1938, Cyclotron irradiated diamonds (Hardy G&G summer 1949)
Pearl
Darkening ...
Research has disclosed that green or irradiated diamonds are more common from alluvial deposits, although they are found in primary sources, usually in the upper part of the diamond-bearing volcanic pipe, but green diamonds of any size are rare.
[Typical blue-green color of many irradiated diamonds, very dark green "black" irradiated rose cut diamond] ...
will apply to all materials irradiated in an accelerator, not just topaz, they may also require importers to be licensed to import any other gems irradiated in an accelerator. That includes irradiated diamonds.
In annealing, the diamond is heated and then cooled in a controlled process to further modify the colour of the already irradiated diamond. Irradiation followed by annealing can create brown, orange, or yellow diamonds.
For diamonds, irradiation and heating can result in browns, blues, yellows, pinks and greens. Irradiated diamonds sell for much less price per carat than the naturally colored ones of comparable quality.
process of the diamond was accomplished between the years 1955 to 1971. The Deepdene had been subject to irradiation process probably by neutron bombardment. Thus, the Deepdene is extensively considered to be the major irradiated diamond in ...
 See also: Diamond, Color, Irradiated, Surface, Crystal
  
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