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Gemstone irradiation is a process in which a gemstone is exposed to artificial radiation 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. [ 1 ]
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Numbered clockwise from left bottom: (1) 2×2 mm initial; top row (2,3,4) irradiated by different doses of 2 MeV electrons; bottom right (5,6) irradiated by different doses and annealed at 800 °C. Sir William Crookes , a gem fancier as well as a chemist and physicist , was the first to discover radiation's effects on diamond color when in 1904 ...
In the past, goshenite was used for manufacturing eyeglasses and lenses owing to its transparency. Nowadays, it is most commonly used for gemstone purposes. [45] [46] The gem value of goshenite is relatively low. However, goshenite can be colored yellow, green, pink, blue and in intermediate colors by irradiating it with high-energy particles.
The irradiation process is widely practiced in jewelry industry [12] and enabled the creation of gemstone colors that do not exist or are extremely rare in nature. [13] However, particularly when done in a nuclear reactor, the processes can make gemstones radioactive. Health risks related to the residual radioactivity of the treated gemstones ...
Italy, 1921–2007), in the collection of Kimberly Klosterman and on display at the Cincinnati Art Museum. [19] Some forms of tourmaline are dichroic; they change color when viewed from different directions. [20] The pink color of tourmalines from many localities is the result of prolonged natural irradiation.
Electron-beam processing or electron irradiation (EBI) is a process that involves using electrons, usually of high energy, to treat an object for a variety of purposes. This may take place under elevated temperatures and nitrogen atmosphere.
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