Sourcing

GIA Creates Gem Guide for Artisanal Miners

SourcingApr 06, 2017

GIA Creates Gem Guide for Artisanal Miners

The Gemological Institute of America has partnered with an NGO to train about 45 miners in the Tanga region of Tanzania using the guide.  

20170406_GIA-pilot.jpg
A team from the GIA and Washington, D.C.-based non-governmental organization Pact traveled to the Tanga region in Tanzania to train about 45 female miners with the booklet.

Carlsbad, Calif.--The Gemological Institute of America has developed a gem guide for small-scale miners and partnered with non-governmental organization Pact on a pilot program training women miners in Tanzania using the guide.

A team of GIA gemology, market, education and design staff chose the content and form of “Selecting Gem Rough: A Guide for Artisanal Miners,” and consulted colored gemstone experts who have extensive experience buying gems in rural areas as well.   

The guide was developed to offer basic gemological and market knowledge for artisanal miners in gem-producing regions, and was written in both English and Tanzanian Swahili. It includes almost every gem species mined in East Africa with illustrations of rough and polished gems and graphical instructions on how to prepare and examine rough under a number of lighting conditions.

“This project is at the very core of GIA’s mission,” President and CEO Susan Jacques said. “We are moving practical gemstone education as far up the supply chain as possible, to people who can benefit tremendously from greater understanding of the beautiful gems they bring to market.”


The GIA created this resource containing basic gemological and market knowledge in both English and Tanzanian Swahili.After producing the resource, a team of seven people from the GIA and Pact traveled to the Tanga region in Tanzania in January to conduct training with the booklet for about 45 female miners of the Tanzanian Association of Women Miners (TAWOMA).

The area was chosen because of its diversity of gemstones and because the leadership of TAWOMA expressed interest in the guide, the GIA said.

The $120,000 cost of the pilot program came from the GIA’s endowment fund.

The institute provided the booklet and training at no cost, and the GIA said it will stay free of charge as it expands training to other small-scale rural miners in East Africa later this year.

The GIA said it and Pact will evaluate the program as it progresses to determine a time frame for the pilot.

“There is often a knowledge differential between artisanal miners and those further along the supply chain,” said Cristina Villegas, technical program manager for Pact’s Mines to Markets program. “This new GIA resource will help miners in rural areas better understand the quality and value of their products, which will help reduce that differential and improve their economic development opportunities.”

Brecken Branstratoris the senior editor, gemstones at National Jeweler, covering sourcing, pricing and other developments in the colored stone sector.

The Latest

Sotheby’s Paraiba tourmaline 7.70 carats
AuctionsJun 18, 2026
Paraíba Tourmalines Sell for $3.4M at Sotheby's

The recent high jewelry auction, which also featured the sale of a 10-carat blue diamond, was “a celebration of color.”

Almasika Le Cauri Endiamanté Drop Earrings
CollectionsJun 18, 2026
Michelle Obama Wears Almasika Earrings Symbolizing Feminine Power

She wore the “Le Cauri Endiamanté” earrings, our Piece of the Week, in the Obamas’ first dual portrait for the Obama Presidential Center.

Graphic for Episode 6 of My Next Question featuring Michelle Orman
PodcastsJun 17, 2026
Episode 6: Las Vegas 2026-Trends, Traffic, Broken Bathrooms

Couture’s Michelle Orman joins Amanda Gizzi and Michelle Graff for this special post-Market Week episode of My Next Question.

Brought-To-By-Article-Top-Image.jpg
Brought to you by
Wedding Band Trends 2026: Personalization Takes Center Stage

Colored gemstones, artisan finishes, mixed metals, and meaningful details are shaping demand in bridal jewelry.

SSEF emerald with filler
GradingJun 17, 2026
SSEF Issues Warning on Refilled Emeralds

The lab is seeing emeralds with filler added post-testing enter the market, accompanied by reports that indicate little to no treatment.

Weekly QuizJun 17, 2026
This Week’s Quiz
Test your jewelry news knowledge by answering these questions.
Take the Quiz
Former Patek Philippe President Philippe Stern
WatchesJun 17, 2026
Patek Philippe’s ‘Visionary’ Leader Philippe Stern Dies at 88

The third generation of the Stern family to head Patek Philippe, he navigated the “quartz crisis” and preserved the brand’s independence.

James Avery Schertz Texas storefront
MajorsJun 17, 2026
James Avery to Revamp In-Store Retail Experience

The Texas-based jeweler is gradually rolling out a new experience-forward layout in its stores.

DCA-NJ-article-1872x1052-060826.jpg
Brought to you by
Building the Future of Jewelry Retail: DCA Expands Education, Leadership Development, and Workforce Solutions

DCA is preparing the next generation of professionals by supporting workforce development, leadership growth, and career advancement.

Seattle Seahawks Championship Ring by Jason of Beverly Hills
MajorsJun 17, 2026
Seahawks’ Super Bowl Ring Blends Meaningful Design, Technical Craftsmanship

The Super Bowl LX champions were honored with diamond and blue sapphire rings by Jason of Beverly Hills.

Marianna Smirnova
Policies & IssuesJun 17, 2026
Community for Ethical Jewelry Names New Executive Director

Marianna Smirnova previously spent a decade working with the Responsible Minerals Initiative, in addition to other relevant roles.

NBA Larry O'Brien Trophy
MajorsJun 16, 2026
5 Things to Know About the 2026 NBA Championship Trophy

The New York Knicks took home the Larry O'Brien Trophy crafted by Tiffany & Co.

Lionheart Cactus Pendant
TrendsJun 16, 2026
Post-Vegas Jewelry Trend Report: Big Beads, Western Flair, White Metals

Associate Editor Natalie Francisco lists the trends she spotted during Jewelry Market Week that will dominate the second half of 2026.

Alicia Arnold
MajorsJun 16, 2026
Sasha Primak Hires New Design Director

The manufacturer has tapped Alicia Arnold, the former director of custom design at Tiny Jewel Box.

Boulle family in hard hats
IndependentsJun 15, 2026
DeBoulle Diamond & Jewelry to Renovate Dallas Flagship

The revamped, elevated space will feature a two-story Patek Philippe atelier and a rooftop patio for parties.

G Shock Coca Cola
WatchesJun 15, 2026
G-Shock, Coca-Cola Partner on Bottle-Inspired Watch

The special-edition piece marks the 140th anniversary of the iconic beverage brand.

Buddha Mama earrings
TrendsJun 15, 2026
Amanda’s Style File: Tiny Charms Are Trending

Here are 13 small charms to inspire your layered looks this summer.

16th century flower cluster hogback diamond ring
AuctionsJun 12, 2026
16th-Century ‘Hogback’ Diamond Ring Going Up for Auction in London

Found by a metal detectorist, the ring likely belonged to a wealthy, possibly royal, owner, said Noonans.

Chouette Designs Margaux Ring
CollectionsJun 12, 2026
Chouette Designs To Launch Collection Celebrating All Types of Love

Our Pride Month Piece of the Week, the “Margaux” ring, is part of the wife-and-wife team’s new “Lovestoned” collection.

CBG logo
Events & AwardsJun 12, 2026
CBG Announces Plans for Phoenix Show

The group has named the keynote speaker and announced a new pavilion for its next event, which is slated for September.

A selection of animal jewelry
EditorsJun 11, 2026
This Was the Best Animal Jewelry in Las Vegas

From lions and hippos to snails and fish, Senior Editor Lenore Fedow wrangles her picks for cutest jewelry critters in Las Vegas.

Marie-Laure Cérède
MajorsJun 11, 2026
Former Cartier Creative Director To Head Chanel’s Jewelry Creation Studio

Marie-Laure Cérède will join Chanel as the new director of its jewelry creation studio, starting in October.

Smiling Rocks booth at JCK Las Vegas 2026
Lab-GrownJun 11, 2026
Smiling Rocks’ ‘Wish Jar’ Generates 100+ Wishes in Las Vegas

At the JCK show, the lab-grown diamond brand teamed up with Jewelers for Children to support Make-A-Wish India.

Ilana McCabe
SourcingJun 11, 2026
Signet Jewelers Exec Joins Diamonds Do Good Board

Ilana McCabe is Signet’s vice president of public relations and brand communications.

Azure blue diamond and 5.04-carat fancy vivid blue diamond
AuctionsJun 10, 2026
31.62-Carat ‘Azure Blue’ Diamond Sells For $8M+ at Christie’s

It was a banner day for blue gemstones, with another blue diamond topping $8 million and a 41-carat sapphire going for $2.3 million.

Saks Fifth Avenue New York City storefront
MajorsJun 10, 2026
Saks Global Receives Bankruptcy Court Approval for Reorganization

The approval means the retailer is on track to exit bankruptcy proceedings this summer.

Jalen Javon Davis and Leslie La Vun Jones II
CrimeJun 10, 2026
2 Suspects Arrested in Texas Jewelry Store Robbery

The men are believed to be part of the group of several masked suspects that robbed Marc Robinson Jewelers in April.

Sylvie Levine wearing engagement ring
CollectionsJun 10, 2026
Sylvie Debuts ‘Elevated’ Bridal Collection Inspired By Designer’s Ring

The bridal-focused brand is also launching its Custom Atelier this summer, a digital custom design tool for its authorized retailers.

×

This site uses cookies to give you the best online experience. By continuing to use & browse this site, we assume you agree to our Privacy Policy