Radiation

Radiation

The emission of particles or electromagnetic waves from a source such as nuclear radiation, X-rays, neutrons, gamma rays, electrons positive or negative, protons. Radiation has the effect of artificially altering color by artificially creating color centers due to crystal defect in the space lattice. For example green irradiated diamond often turns to yellow or cinnamon brown when radiated for some hours by heat treatment.

See Alexandrite Tsarstone collectors guide, Definition of Radiation, http://w.alexandrite.com/viewpage.html?id=GG-103-00001 (The emission of particles or electromagnetic waves from a source such as nuclear radiation, X-rays, neutrons, gamma rays, electrons positive or negative, protons. Radiation has the effect of artificially altering color by artificially creating color centers due to crystal defect in the space lattice. For example green irradiated diamond often turns to yellow or cinnamon brown when radiated for some hours by heat treatment.) (as of Apr. 06, 2026, 17:11 GMT).