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CVD, HPHT and Natural Diamonds
Article
Is There a Difference Between Natural and Laboratory-Grown Diamonds?

Learn about the differences – and similarities – between natural and laboratory-grown diamonds, and how GIA’s researchers and grading laboratories can tell the difference

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A heart-shaped piece of pink drusy hangs from a gold chain.
Article
Dreamy Drusy: Minute Crystals Shimmer in Dramatic Designs

Drusy jewellery has surged in popularity in recent years. Celebrities wear it on the red carpet and designers clamour for it at gem shows.

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A young boy looks through a microscope.
Article
St Jude Children Tour Inside Gems’ Magical World

Young patients at St Jude Children’s Research Hospital recently explored the inner world of gems and minerals with a visiting team from GIA.

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A group of rough sapphires encircle cut sapphires.
Article
Montana Yogo Sapphires’ Unique Gemmology

A look at the mining and distinguishing characteristics of this naturally vibrant blue sapphire.

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Article
Winter 2018 G&G: The Colour Origins of Pink-to-Red Diamonds and Gem-Grade Diaspore, The Mystery and Majesty of the Amber Room, and Gemmological Characteristics of P. Maculata “Pipi” Pearls

A summary of the Winter 2018 issue of Gems & Gemology.

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Twelve alumni chapter leaders gathered at GIA’s World Headquarters.
Article
Embrace the Renewed Energy – and Opportunities – of the Season

The GIA Alumni Association offers education, networking and fun to all who choose to participate.

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A large group of people sit for a photo to mark the opening of the Macau chapter. A GIA banner hangs behind them.
Article
A Season of Thanks for Dedicated Alumni Members

A special thanks to alumni volunteers who coordinate education and networking events for GIA Alumni Association chapters around the world.

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Four woman wearing tiaras stand in a group with Andrew Prince.
Article
Alumni Activities Advance the Legacy of the Gem and Jewellery Trade

Alumni across the globe participate in chapter events and are out in full force to support the trade. There are a variety of ways you can join them.

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A group of people sit and stand around a large wooden table at the brewery.
Article
GIA Alumni Association’s Global Impact and Connectivity

Driven by a passion for gems and jewellery, as well as education, the countless actions of every single individual enhances the GIA alumni community.

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Man in a hard hat sits in an underground emerald mine.
Article
Geologist’s Newest Mission: Share the Love of Coloured Gemstones

African-born coloured stone specialist visits America and changes his life forever; finding love, earning his GG and starting a new career.

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