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Brazil Gem Expedition

Four cities. Mines, markets, and gemstone hubs. A rare opportunity to experience the heart of the global colored gemstone trade.

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ABOUT GUILD

Your Trusted Partner in Gemology

For over four decades, GUILD has been at the forefront of gemological science, providing comprehensive laboratory services and world-class education. We combine cutting-edge technology with deep expertise to deliver reliable, accurate results that professionals worldwide depend on.

40+Years of Excellence
1.5M+Certificates issued worldwide
100K+Professionals Trained
Gemological Analysis
What We Do

Our Services

Laboratory Testing
01

Gem Laboratories

Continuous, transparent, and consistent gemological testing services powered by Mine to Market field research and A-Type reference standards.

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Education Programs
02

Institute of Gemology

Evolving gemological education grounded in continuous field research, transforming firsthand discoveries into practical, up-to-date expertise.

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Gemology Research
03

Gemology Research

Peer-reviewed papers, journals, and publications from our laboratories and field programs—open knowledge built on primary research and documented case studies.

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Mine to Market

Field
Gemology

GUILD's field gemology practice forms the foundation of our research and knowledge creation. Through direct engagement from mine to market, we generate first-hand insights that advance the entire industry.

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Latest Updates

News & Research

Latest discoveries, research findings, and industry developments from GUILD laboratories and field operations.

ResearchNovember 25, 2025

GUILD Field Study: Comprehensive Analysis of Madagascar's Gem Industry Market and Mining Ecosystem

Amidst the vast blue expanse of the Indian Ocean lies Madagascar, the world's fourth-largest island. This land is not only a paradise for lemurs and baobab trees but has also earned the reputation of ...

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ResearchNovember 4, 2025

From 65% Global Production to Trade Freeze: What Shock Is Brazil Experiencing?

While the clarity of 'Santa Maria' Aquamarine, the neon of Paraiba Tourmaline, and the brilliance of Imperial Topaz still shine in the hearts of jewelry enthusiasts, Brazil—the land that once yielded ...

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ResearchOctober 23, 2025

Global Colored Gemstone Market Enters New Normal: Scarcity Becomes Certainty, Differentiation Create

When gold prices fluctuate violently and the trends of traditional assets are difficult to predict, have you noticed the other picture presented by the colored gemstone market? On one side, top gemsto...

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