About: Gemstone irradiation

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Gemstone irradiation is a process in which a gemstone is artificially irradiated in order to enhance its optical properties. High levels of ionizing radiation can change the atomic structure of the gemstone's crystal lattice, which in turn alters the optical properties within it. As a result, the gem­stone's color may be significantly altered or the visibility of its inclusions may be lessened. The process, widely practised in jewelry industry, is done in either a nuclear reactor for neutron bombardment, a particle accelerator for electron bombard­ment, or a gamma ray facility using the radioactive isotope cobalt-60. These irradiation processes have enabled the creation of gemstone colors that do not exist or are extremely rare in nature.

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  • Gemstone irradiation is a process in which a gemstone is artificially irradiated in order to enhance its optical properties. High levels of ionizing radiation can change the atomic structure of the gemstone's crystal lattice, which in turn alters the optical properties within it. As a result, the gem­stone's color may be significantly altered or the visibility of its inclusions may be lessened. The process, widely practised in jewelry industry, is done in either a nuclear reactor for neutron bombardment, a particle accelerator for electron bombard­ment, or a gamma ray facility using the radioactive isotope cobalt-60. These irradiation processes have enabled the creation of gemstone colors that do not exist or are extremely rare in nature. (en)
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  • A Initial (en)
  • B Irradiated by different doses of 2 MeV electrons (en)
  • C Irradiated by different doses and then annealed at (en)
  • Pure diamonds, before and after irradiation treatment (en)
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  • London Blue , one of the neutron-bombarded varieties of topaz, compared to naturally blue topaz (en)
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  • Lepidolite-Topaz-vlt-6b.jpg (en)
  • London blue topaz.JPG (en)
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  • Gemstone irradiation is a process in which a gemstone is artificially irradiated in order to enhance its optical properties. High levels of ionizing radiation can change the atomic structure of the gemstone's crystal lattice, which in turn alters the optical properties within it. As a result, the gem­stone's color may be significantly altered or the visibility of its inclusions may be lessened. The process, widely practised in jewelry industry, is done in either a nuclear reactor for neutron bombardment, a particle accelerator for electron bombard­ment, or a gamma ray facility using the radioactive isotope cobalt-60. These irradiation processes have enabled the creation of gemstone colors that do not exist or are extremely rare in nature. (en)
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  • Gemstone irradiation (en)
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