Learn how the structure, inclusions and properties of some gemstones interact with light to create unusual visual effects.
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Check out some of the most interesting and unusual diamonds and coloured stones submitted to GIA’s laboratories in 2019.
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G&G Brief presents an overview of the content of the Winter 2015 issue of Gems & Gemology.
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Everyone would agree that exposure and focus are the most critical aspects to consider when photographing gems or jewellery. But there are two other practices that take this kind of photography even further: lighting and positioning of the gem or jewel. The first component ensures a successful photograph. The second makes a picture interesting – or even compelling.
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G&G Brief presents an overview of the content of the Summer 2015 issue of Gems & Gemology.
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This article, from the Summer 2009 issue of Gems & Gemmology, is a compilation of abstracts of important gemmology-related articles published outside of Gems & Gemmology.
Read MoreAn overview of the potential effects that heat treatment can have on corundum.
Read MoreA review of heat treatment methods available for use on natural or synthetic corundum.
Read MoreThis article reports the results of a series of experiments conducted to explain the phenomenon of induced fingerprints.
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A bluish violet sapphire shows surprising effects under lab examination.
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