Featured Article
Research
Large, Rare Diamonds a Window into Earth’s Mantle
Breakthrough research led by GIA Postdoctoral Research Fellow Evan Smith examines exceptional diamonds.
For decades, GIA has been on the cutting edge of gemological research, analyzing data on gems and their characteristics. This effort becomes more challenging each year, as new gem sources emerge and new treatment processes and synthetic materials come onto the market.
Featured Article
Large, Rare Diamonds a Window into Earth’s Mantle
Breakthrough research led by GIA Postdoctoral Research Fellow Evan Smith examines exceptional diamonds.
GIA Gem Project
Dr. Edward J. Gubelin Gem Collection
GIA has studied more than 400 important gemstones in the Edward J. Gubelin Collection and is committed to sharing this repository of gemological information.
Go To IndexResearch Fellowship
Postdoctoral Research Fellowship Program
Pursue full-time academic research in mineralogy, geology, physics, materials science and other fields related to gemology.
Read MoreWhy GIA Research
Research not only deepens the world’s understanding of gems, but also protects those who buy or sell them.
Instrumentation
Scientific Instruments Help Researchers Tell Gem Stories
Researchers use powerful analytical tools to determine the distinctive characteristics of natural, synthetic and treated gem materials.
Learn MoreResearch Activities
GIA pursues a wide range of scientific investigations to gather and analyze data on gemstones, identifying practical solutions to gemological challenges and communicating their findings.
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A study of 12 white and yellow “golden” South Sea cultured pearls nucleated with freshwater non-bead cultured pearls.
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Color stability experiments show that the color of Queen conch shell and pearls may shift in hue and/or saturation under X-ray radiation or short-wave UV radiation.
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Researchers examined one of the most interesting and unique diamond crystals ever found.
Read MoreRichard T. Liddicoat Postdoctoral Research Fellows
Where Do Blue Diamonds Come From?
Blue Diamonds Have a Surprising “Superdeep” Origin and a Link to Ancient Oceans
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Large, Rare Diamonds Reveal the Inner Workings of Earth’s Mantle
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Observations on the Heat Treatment of Basalt-Related Blue Sapphires
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Characterization of Blue Sapphires from the Mogok Stone Tract, Mandalay Region, Burma (Myanmar)
Read ArticleDNA Techniques Applied to the Identification of Pinctada Fucata Pearls from Uwajima, Ehime Prefecture, Japan Supplementary Data
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Update on "Low-Temperature" Heat Treatment of Mozambican Ruby: A Focus on Inclusions and FTIR Spectroscopy
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