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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 young boy looks through a microscope.
Article
St. Jude Kids 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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Article
Kuwaiti Alumna Takes ‘Timeless’ Designs to International Stage

She caught the attention of Hollywood, now Dana Al Nafisi is using her GIA education to garner respect and loyalty in her home country, Kuwait.

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A man and woman shake hands during a career fair event. In the background is a GIA poster.
Article
Adapting to Changing Workplaces

GIA Career Service advisors offer tips on how to navigate the changing workforce and consumer attitudes for success in the gem and jewelry industry.

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 Hand holding tube-shaped boulder opal
Article
Queensland Opal Fields: Home of the Unique Australian Boulder Opal

Boulder opal is becoming more and more popular. Australia’s central Queensland is the home of more than a dozen of sources of this stone. Come with GIA field gemologists to find out more about this unique gem.

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Woman holds multiple strands of black cultured pearls.
Article
‘Pearl Goddess’ Pours Experience, Support into GIA Alumni Association

Betty Sue King shares her expertise at chapter meetings, on pearl trips and with donations to the Tucson auctions – all in support of the GIA alumni.

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Article
GIA Gem Project
Tourmaline

Tourmalines have a very complex chemical composition, and more than a dozen mineral species are recognized within this group.

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Article
GIA Gem Project
Various Gems
(Amblygonite - Axinite)

Among the collection assembled by Dr. Edward Gübelin are a number of uncommon gemstones from many worldwide localities.

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Article
GIA Gem Project
Various Gems (Taaffeite - Zoisite)

Among the collection assembled by Dr. Edward Gübelin are a number of uncommon gemstones from many worldwide localities.

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Article
GIA Gem Project
Various Gems
(Sapphirine - Stibiotantalite)

Among the collection assembled by Dr. Edward Gübelin are a number of uncommon gemstones from many worldwide localities.

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