gemstone irradiation
... that gemstone irradiation processes enable the creation of certain gemstone colors that do not exist or are extremely rare in nature?
... that <b id="mwF6k"><a href="./Gemstone_irradiation" id="mwF6o" rel="mw:WikiLink" title="Gemstone irradiation">gemstone irradiation</a></b> processes enable the creation of certain <a href="./Gemstone" id="mwF6s" rel="mw:WikiLink" title="Gemstone">gemstone</a> colors that do not exist or are extremely rare in nature?