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  • Evan M. Smith

    Evan M. Smith specializes in diamond geology.

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    Brendan Hoare

    Brendan Hoare specializes in mantle geochronology and geochemistry.

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    Rachelle Turnier

    Rachelle Turnier specializes in colored gemstone geochemistry

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    Roy Bassoo

    Bassoo specializes in Understanding the spatial distribution and geological causes of defects in green diamonds

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    My Laboratory – Meet Your 24/7 Online Concierge

    Instantly view and manage the job status of your gemstones from anywhere you have Internet access with My Laboratory – a 24/7 secure portal that has the latest information on your items, along with other invaluable resources.

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    Developing Tanzania's Gem and Jewelry Industry

    A native of Kenya, Susie Kennedy teamed up with her husband in the 1990s to establish their place in the gem industry.

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    Report Check Plus

    Learn about an easier, quicker way to verify multiple reports and access multiple report PDFs.

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    Secrets of a Master Gem Cutter

    For more than two decades, former plumber, welder and jewelry store-owner Dyber has been dazzling the world with his brilliant stone carvings ranging from sizes that fit in the palm of the hand to 12-lb quartz behemoths that can dominate a room.

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    GIA Laboratory Alerts

    View updated lab alerts.

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    GIA Diamond Focus™ Report Submission Guidelines

    GIA Diamond Focus® Report is a cost-effective grading report delivering key grading information in a digital format for select natural, untreated D-to-Z diamonds weighing 0.15 to 0.29 carats.

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    Cookie Notice

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