How variations in UV lamp output can affect observed fluorescence colour and intensity.
Read MoreA new microlithography process developed to create high-resolution diffraction grating patterns on portions of certain facets can improve the dispersion of light and thus the amount of “fire” in a diamond.
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.
Read MoreKnowledge 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 MoreIt is anticipated that production of diamonds from the sea will increase substantially in the future.
Read MoreThe 1990s witnessed important developments in the commercial viability of gem-quality synthetic diamonds.
Read Morethis article reviews the rise of the modern diamond cutting industry in India and its impact on the world diamond trade
Read MoreSynthetic moissanite is much closer to diamond in overall appearance and heft than any previous diamond imitation; this article reports on how to identify and characterise it.
Read MoreSeveral 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 MoreExamination of a group of 14 brownish yellow, yellow and greenish yellow synthetic diamonds reveals distinctive gemmological properties.
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