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

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

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Woman shines a light on huge crystals as she crawls among them.
Article
Gemologist Aims to Pique World’s Curiosity in Giant Crystals

‘Adventure seeker’ crawls through underground caves to reach and research giant selenite crystals – then shares her knowledge with the world.

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Rough CLIPPIR diamonds
The Very Deep Origin of the World’s Biggest Diamonds

Explores an exceptional family of diamonds, referred to as “CLIPPIR” (Cullinan-like, Large, Inclusion-Poor, Pure, Irregular, and Resorbed), that formed in a superdeep environment.

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Wedding couple: Groom in black tuxedo and woman in white gown hold hands and gaze at one another. California hills in the background.
Article
Love in Tucson: The ‘Stars Aligned’ for Geologist and Designer at GIA Alumni Party

They met in line to get into the GIA Alumni Association Tucson party – and changed the course of their lives forever.

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Colombian independent miners
Colombian Emerald Industry: Winds of Change

A firsthand look at Colombia’s emerald mines and the cutting and trading industry in Bogotá.

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Husband and wife gaze happily at emerald rough found in a Colombian mine.
Article
Colombian Emerald Industry: Winds of Change

Andy Lucas, GIA’s education manager of field gemology, researches and documents the mine to market journey of gemstones. Lucas shares the changes he observed in Colombia’s major emerald mining and cutting areas in a presentation he made at the 2017 JCK Las Vegas show.

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Article
The Unexpected Origins of Big Diamonds

Dr. Evan Smith, Ph.D., GIA research scientist, has dedicated his work to methodically characterizing the inclusions found in rare diamonds. In this video presentation recorded at the 2017 JCK Las Vegas show, Smith shares his findings on the unexpected ori

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Çiğdem Lüle behind a podium.
Article
Researcher, Educator Uses Gems to Explore Ancient Civilizations

Çiğdem Lüle uses her expertise to teach about the gem market and develop the multidisciplinary research subject of archaeogemology.

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Particolor tourmaline crystal from Luc Yen, Vietnam
An Update on Tourmaline from Luc Yen, Vietnam

Reviews the characteristics of tourmaline from pegmatites in the Luc Yen district of northern Vietnam.

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Diamond octahedron, diamond bort, and carbonado
Carbonado Diamond: A Review of Properties and Origin

Presents a detailed examination of about 800 samples of carbonado diamond from Brazil and the Central African Republic, including possible models for its genesis.

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