Compares the image quality provided by real-time microradiographic imaging (RTX) units fitted with two different detectors: an image intensifier (II) and a flat panel detector (FPD).
Read MoreCompares PL spectroscopy data of 48 emerald samples from three countries to evaluate the usefulness of the technique in geographic origin determination.
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A technique for origin identification based on statistical analysis and LA-ICP-MS spectrometry.
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How variations in UV lamp output can affect observed fluorescence colour and intensity.
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Knowledge of type allows gemmologists to better evaluate if a diamond might be treated or synthetic, and whether it should be sent to a laboratory for testing.
Read MoreHistorically, global rough diamond production has fluctuated greatly due to a myriad of causes, many of which are explored in this article.
Read MoreThis article describes the first application of laser-induced breakdown spectroscopy (LIBS) to gemmology.
Read MoreThe GIA diamond cut grading system described here includes the components of brightness, fire, scintillation, polish and symmetry, as well as weight and durability concerns, into a single overall grade for cut quality for standard round brilliants.
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Several diamonds were treated for the purposes of observation and report with a new laser technique which does not show the typical surface-reaching drill hole.
Read MoreResearchers from the Tairus joint venture have developed the technology for the hydrothermal growth of gem-quality crystals of synthetic sapphire.
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