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

Edina Kiss Popsicle Pendant and Karina Choudhrie Ice Cream Charm
TrendsJul 31, 2026
These Pieces of the Week Are Sweet

Edina Kiss’ “Popsicle” pendant and Karina Choudhrie’s “Ice Cream” charm satisfy that summer craving for a sweet piece of jewelry.

Macy’s Herald Square store sign
MajorsJul 31, 2026
Macy’s Iconic Red Shopping Bag Sign Torn Down

The massive billboard has been in the same spot on the department store’s Herald Square flagship store for decades.

U.S. Trade Representative Jamieson Greer and Jewelers of America President and CEO David Bonaparte in Washington, D.C.
Policies & IssuesJul 30, 2026
JA Heads Back to Washington as New Wave of Tariffs Takes Effect

David Bonaparte, along with Tim Haake and Ronnie VanderLinden, continue to lobby for tariff exemptions for diamonds, gemstones, and pearls.

1872-x-1052-July-ad (1).png
Brought to you by
Why More Jewelry Retailers Are Hosting Turnkey Estate Buying Events

Retailers are seeking new ways to attract customers, increase traffic, and create revenue – Estate buying events are a popular solution.

Hands pushing shopping cart
SurveysJul 30, 2026
Consumer Confidence Slips in July

Survey respondents were concerned about the rising prices of food and groceries as well as unemployment.

Weekly QuizJul 30, 2026
This Week’s Quiz
Test your jewelry news knowledge by answering these questions.
Take the Quiz
Paola De Luca Presents Trendvision Book
Events & AwardsJul 30, 2026
Vicenzaoro Releases 2026 Education Lineup

The trade show, slated for Sept. 4-8 in Vicenza, Italy, will feature sessions on trends, AI, gemology, and manufacturing.

Jewels by Grace Hillsborough Show
Events & AwardsJul 30, 2026
Hillsborough Show Moves to New Location for 2026

The public shopping event featuring art, jewelry, watches, and rare collectibles, will take place in Santa Clara, California, this fall.

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.

Endiama Commercial Director Elton Escrivão at the 2026 African Mining Indaba
EditorsJul 29, 2026
Q&A: The Past and Future of Angola’s Diamond Industry

Endiama Commercial Director Elton Escrivão knows people have a lot of misperceptions about Angola. He wants to change that.

Kevin Reilly PGI USA
MajorsJul 29, 2026
Kevin Reilly Retires After 39 Years in the Jewelry Industry

Reilly has been with PGI USA for the last 20 years, leading partnership development and professional education.

Pomellato Mandala Chromia necklace
FinancialsJul 29, 2026
Kering’s H1 Jewelry Sales Up 14%

Boucheron reached record sales while Pomellato found success in its signature collections.

United Flags of Fashion Arkansas Flag By Lauren Harwell Godfrey
Events & AwardsJul 29, 2026
Lauren Harwell Godfrey Designs a Flag for Arkansas

She was one of more than 120 American designers who created flags for the “United Flags of Fashion” project led by CFDA and Vogue.

The Retail Smiths partner and National Jeweler columnist Peter Smith 
ColumnistsJul 28, 2026
Peter Smith: Why Your Job Postings May Be Working Against You

Smith reveals the method The Retail Smiths use to help retailers and vendors write better job postings.

Tiffany & Co butterfly necklace
FinancialsJul 28, 2026
Tiffany & Co., Bulgari Lead the Way for LVMH in H1

LVMH’s jewelry and watch brands outperformed the company’s other divisions in an environment the company described as “disrupted.”

Lionheart Sacred Heart Charm Necklace
CollectionsJul 28, 2026
Lionheart’s New Collection Unites Spiritual Iconography

“Sacred Heart” features symbols like crosses, angel wings, the Star of David, and the evil eye as a representation of coexistence.

Events & AwardsJul 28, 2026
The Edge Funding 2 Scholarships Via 24 Karat Club SEUS

The scholarships will go to early-career professionals looking to study gemology, bench work and jewelry design, or store operations.

Mikimoto L'éclat high jewelry brooch
SurveysJul 27, 2026
Jewelry Leads Luxury Market Amid Stabilization, Bain Says

Bain & Company delved into the trends shaping the luxury market, the impact of AI, and more in its recent study.

Harvard Rubies Exhibit The Soul of Flame II Brooch by Austy Lee
SourcingJul 27, 2026
‘Rubies’ Goes on Display at Harvard Museum

The exhibition reveals the gemology, geology, and cultural history of the iconic red gemstone.

Stock image of shipping containers in port
Policies & IssuesJul 24, 2026
New Trump Tariffs: What They Mean for Jewelry

The new sweeping slate of tariffs impacts 60 countries, including India, China, Thailand, Hong Kong, and the United Arab Emirates.

Jorge Adeler Gods & Heroes coin pendant
TrendsJul 24, 2026
Amanda’s Style File: Ode to ‘The Odyssey’

From coin pendants to diamond shields, these old world-inspired jewels are the perfect accessory for an epic journey.

Courtney Leidy Amethyst Silk Cord Pendant
TrendsJul 24, 2026
Courtney Leidy’s Silk Cord Pendants Center Unexpected Pairings

Our Piece of the Week pairs a checkerboard-cut amethyst with an ivy green silk cord.

NJ Article image.png
PodcastsJul 23, 2026
Episode 7: Reinhold Jewelers on the Power of Relationships

Mildred Marcano Abrams and Yael Reinhold join the podcast to talk community connections, holiday plans, and preserving Reinhold’s legacy.

Trucks at De Beers’ Orapa mine in Botswana
SourcingJul 23, 2026
De Beers’ Production Jumps 88 Percent in Q2

Production also was up in the first half of 2026 but is expected to “substantially” decrease in H2 as two key mines undergo maintenance.

Silvia Furmanovich Enchapado en Tamo Wooden Wheat Straw Sun Earrings
CollectionsJul 23, 2026
Silvia Furmanovich’s New Collection Travels Back to the 1920s

“Art Deco” fuses ancestral techniques, rare materials, and modern perspectives as a tribute to the optimism and curiosity of the movement.

Sissy’s Log Cabin Saracen Casino
IndependentsJul 23, 2026
Sissy's Log Cabin Opens Casino Store

The jeweler’s newest store is inside Arkansas’ Saracen Casino Resort.

Kate Spade New York watches
WatchesJul 23, 2026
Movado Inks Licensing Deal With Kate Spade New York

The watch company will design, manufacture, and distribute Kate Spade New York watches.

Stock photo of loose polished diamonds
Policies & IssuesJul 22, 2026
Trump to Put 50% Tariff on Canadian Goods

The higher tax is set to go into effect in August and will apply to loose polished diamonds as well as precious and base metals jewelry.

×

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