GIA researcher analyses and confirms that De Beers’ Lightbox diamonds are grown using the chemical vapour deposition process.
Read MoreExamines 85 saltwater natural pearls, reportedly harvested from the Caribbean islands off the coast of Venezuela during the early 16th century, to determine their age.
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Details the process used by Wiede’s Carbidwerk to produce star synthetic corundum from the mid-1950s until the 1970s.
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Investigates the properties of synthetic zincite produced by industrial kilns in Poland.
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Results from GIA’s recent testing of a 10.08 ct blue HPHT synthetic diamond, the largest HPHT synthetic recorded to date.
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An overview of recently expanded sapphire production at the Gem Mountain mine near Philipsburg, Montana.
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A review of the “Maker & Muse, Women and Early 20th Century Art Jewelry” exhibition at Chicago’s Driehaus Museum.
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An overview of recently expanded sapphire production at the Gem Mountain mine near Philipsburg, Montana.
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Examination of the largest HPHT synthetic diamonds GIA has examined so far demonstrated significant progress in this growth technology.
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From the series, "Sapphire: A Crystal With Many Facets," this article explores how an increase in synthetic sapphire technical applications has affected the synthetic gem industry.
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