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

AMNH Beryl
GradingMar 25, 2026
New York’s Natural History Museum, Wiley To Build Minerals Database

Wiley said the project will give scientists worldwide access to the American Museum of Natural’s History renowned mineral collection.

Boochier Flower Puff Campaign
CollectionsMar 25, 2026
Boochier Turns Flower Friendship Bracelets Into Fine Jewelry

The “Flower Puff” collection looks to beaded flower friendship bracelets from childhood, turning the silhouette into nostalgic fine jewelry.

Community for Ethical Jewelry logo
Policies & IssuesMar 25, 2026
Community for Ethical Jewelry to Host Bench Jeweler Shortage Webinar

Set for April 2, the webinar will discuss how the jewelry industry can address the workforce gap.

GIA iD100®
Brought to you by
Protect Your Customers and Your Business

You deserve to know what you are selling–to protect your customers as well as your business and your reputation.

Lisa Bayer
IndependentsMar 24, 2026
Lisa Bayer, Illustrator and Beloved Member of the Muse Family, Dies at 64

Bayer, founder of Lisa Bayer Designs, is remembered as “a bright light in every room.”

Weekly QuizMar 19, 2026
This Week’s Quiz
Test your jewelry news knowledge by answering these questions.
Take the Quiz
Tiffany & co diamond ring
AuctionsMar 24, 2026
White Diamonds Shine In Christie's Jewels Online Sale

The highest-grossing lot was a Tiffany & Co. ring set with a flawless, emerald-cut diamond of 10 carats.

Tom Heap
WatchesMar 24, 2026
Christie’s Names New Senior Specialist, Watches

Former Sotheby’s executive Tom Heap has taken on the London-based role.

TopImageCrop.jpg
Brought to you by
Is This You? Every Jeweler Has This Problem; We Have the Solution.

Every jeweler faces the same challenge: helping customers protect what they love. Here’s the solution designed for today’s jewelry business.

NYPD robbery media
CrimeMar 23, 2026
NYPD Looking for 3 Jewelry Store Robbery Suspects

The group of women allegedly robbed two Catbird stores and one Gorjana location on the afternoon of March 9.

Georgia May Jagger in Tommy Hilfiger campaign
FinancialsMar 23, 2026
Movado’s Q4 Sales Rise As Demand Grows From Younger Shoppers, Women

Movado CEO Efraim Grinberg noted continued strength in the fashion watch and accessible luxury segments in the U.S.

Marco Bicego Art of Craft Campaign Imagery
TrendsMar 23, 2026
Marco Bicego’s New Campaign Showcases ‘The Art of Craft’

After celebrating 25 years in 2025, the campaign marks a new chapter for the jewelry brand with the message that “Identity Creates Value.”

Couture Time to Watches logo
Events & AwardsMar 23, 2026
These Watch Brands Are Heading to Couture This Year

Couture and Time to Watches announced the watch brands, from big names to independents, attendees will see at the show.

Macy’s New York City Herald Square flagship
FinancialsMar 20, 2026
Macy’s Turnaround Plans Shows Promise, Boosted by Bloomingdale’s

Plus, why Saks Global’s bankruptcy may have given Bloomingdale’s an edge.

Jwaneng Diamond
AuctionsMar 20, 2026
Sotheby's, De Beers Unveil ‘Jwaneng 28.88’ Diamond

The flawless, Type IIa stone is estimated to achieve up to $2.8 million at the auction house’s high jewelry sale in April.

Tiffany & Co.’s Three Jean Schlumberger for Tiffany & Co. Archives Brooches
TrendsMar 20, 2026
‘Frankenstein’ Costume Designer Is Bejeweled In Brooches for Oscars Win

Costume designer Kate Hawley wore three archival Tiffany & Co. brooches, our Pieces of the Week, while accepting her first Oscar.

Women wearing Zales jewelry
FinancialsMar 19, 2026
Signet Jewelers to Close 100 Stores, Shutter James Allen Banner

The jewelry retailer announced changes to its store network and brand portfolio during its fourth-quarter earnings call.

Hand holding shopping bags
SurveysMar 19, 2026
NRF Forecasts 4% Retail Sales Growth in 2026

From a weaker labor market to inflation, NRF Chief Economist Mark Mathews gave insight on what retailers can expect this year.

26.36 carat round brilliant cut white diamond
AuctionsMar 19, 2026
26-Carat Diamond Tops $1M at Auction

The historic stone, which sold at Elmwood’s in London, is the largest white diamond to be offered on the U.K. market in more than a decade.

JCK Rocks Nelly Graphic
Events & AwardsMar 19, 2026
JCK Rocks To Ride With Nelly

Three-time Grammy award-winning artist Nelly is set to perform at the annual event at Tao Beach in Las Vegas on May 31.

Lady Wardington and diamond-clip brooch
AuctionsMar 18, 2026
Collection of the ‘Severely Beautiful’ Lady Wardington Fetches $161K

The model and fashion editor’s gold evening bags were the top lots at the London sale, going for more than $25,000 each.

My Next Question Episode 3 guest Johnny Nelson
PodcastsMar 18, 2026
Episode 3: An Interview With Jewelry Designer Johnny Nelson

Fresh off winning the David Yurman Gem Awards Grant, Nelson discusses the ring that launched his career and his plans for the future.

Lucara blue diamond
SourcingMar 18, 2026
Lucara Recovers Nearly 37-Carat Blue Diamond

The “stunning” Type IIb stone was found via x-ray technology at its Karowe mine in Botswana.

Stuller The Basics of Jewelry
MajorsMar 18, 2026
Stuller Releases New Edition of Jewelry Education Book

“The Basics of Jewelry” has been updated to include modern topics and visuals.

Mark and Candy Udell on stage at the 2026 Gem Awards
Events & AwardsMar 17, 2026
The Best Moments From the 2026 Gem Awards

Held just before the Oscars, the jewelry industry’s big awards show had its share of standout jewelry, gowns, and acceptance speeches.

Winter Tourmaline
SourcingMar 17, 2026
Cruzeiro Mine Debuts ‘Winter Tourmaline’

The Brazilian mine’s new collection features cabochons in soft, muted shades like silver and lilac.

Natalie Portman in Tiffany & Co. Jewelry
TrendsMar 17, 2026
Natalie Portman Is Tiffany & Co.’s New Ambassador

The Academy Award-winning actress stars in Tiffany & Co.’s latest commercial, which debuted Sunday night during the Oscars.

Jean-Marc Duplaix
MajorsMar 17, 2026
Kering Establishes Jewelry Division, Appoints CEO

The organizational change follows Kering’s promise of a transformation after declining sales in 2025.

×

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