This collection of jewelry images illustrates how metalwork techniques showcase gemstone and jewelry designs.
Read MoreSummarizes statistical data and distinctive features of several thousand gem-quality HPHT synthetic diamonds examined by GIA from 2007 through 2016.
Read MoreDemonstrates the importance of this method in identifying diamond treatments, based on the analysis of PL maps acquired from a brownish orange HPHT synthetic diamond.
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Presents the underlying physics and methodology of this analytical technique, which has become an essential tool in identifying treated and synthetic diamonds.
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A guide to capturing gem inclusion scenes using practical equipment and techniques and the appropriate image-refining software.
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How contrast patterns can increase perceived brightness and optimize a gemstone's appearance.
Read MorePresents a group of corundum standards developed by GIA to improve the accuracy and efficiency of its laser ablation–inductively coupled plasma–mass spectrometry (LA-ICP-MS) instruments.
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A look at the artistic heritage of the Drehers, an influential family of gem carvers in Idar-Oberstein, Germany.
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How variations in UV lamp output can affect observed fluorescence color and intensity.
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Analyzes the substructures that cause the intense iridescence observed in “rainbow” hematite from Minas Gerais, Brazil.
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