Other

Chain of custody challenges for colored gems

OtherMay 10, 2016

Chain of custody challenges for colored gems

Gemologist Edward Boehm details efforts being made worldwide to improve the lives of small-scale, or artisanal, colored gemstone miners, including a project he helped with in Madagascar. 


Graduate Gemologist (G.G.) Edward Boehm is the owner of RareSource, a Chattanooga, Tenn.-based gemstone supply and consultancy.
Compared to diamonds, colored gemstones represent a much smaller segment of the jewelry industry. They provide, however, a source of income to a much broader range of social and economic strata while at the same time they lack an industry-wide system to promote ethical trade of rough gem material. This article explores a growing list of initiatives aimed at making sure that miners of exquisite colored gemstones receive fair pay, health care and even a hearty daily lunch.

Colored gemstones have enjoyed record-breaking auction prices due to a strong resurgence in demand over the past six years. Though colored gemstone prices are not as easy to track, historically they tend to follow diamond and gold price trends. Recently however, colored gems have shown greater gains than diamonds due to the dramatic drop in diamond demand coupled with overproduction at the beginning of the global recession in 2008. Gems have also outperformed gold as it has recently lost its luster as a haven for hedging stock investments.

Naturally, this trend has brought much more attention to colored gemstones and their sources, as well as how they are mined, cut, and traded.

Unlike the diamond industry, colored gemstones do not have an industry-wide system in place to promote ethical trade of rough gem material.  This is largely due to the fact that most colored gemstones are difficult to trace because they are mined by small-scale artisanal miners while most diamonds are mined by large-scale mining concerns.

In May of 2000, South African diamond producing countries initiated discussions on what became known as the Kimberly Process to stop the trade of rough diamonds that could potentially be used to finance rebels seeking to undermine legitimate governments.  

In 2003, this process was implemented by several diamond-producing countries, and today has 54 members from 80 countries that represent approximately 99.8 percent of global diamond production. Essentially, the process seeks to provide a certification scheme by which supplier countries are required to meet strict guidelines to guarantee conflict-free diamonds through greater transparency and exchange of detailed information related to mining, recovery and transportation of rough diamonds. However, in December 2011, international non-governmental organization Global Witness resigned as an official observer to protest what it called “blatant breaches” in compliance by several supplier member countries.
Though serious challenges remain, the Kimberly Process has paved the way for greater transparency and sets an example for other mining sectors.

Gemstone mining can be divided into large-scale, small-scale, and artisanal mining operations. For simplicity most organizations combine small-scale and artisanal into one category. According to The World Bank, “at least 20 million people engage in artisanal and small-scale mining and a further 100 million people depend on it for their livelihood. These numbers are growing in line with higher prices and demand for minerals both in OECD countries and emerging economies such as China and India.”

There are 47 primary colored gemstone producing countries around the world. Approximately 20 percent of all colored gemstones come from large-scale mining operations (LSM) while approximately 80 percent come from artisanal and small-scale mining operations (ASM). It is estimated that 90 percent of these ASM operations are located in developing and emerging countries. In comparison, approximately 10 percent of all diamonds come from ASM operations.

The colored gemstone industry has made numerous proposals for certification schemes but none have taken hold.

In 2001 the World Bank launched an initiative called the Communities, Artisanal and Small-Scale Mining (CASM) declaring that “CASM’s holistic approach to small-scale mining aims to transform this activity from a source of conflict and poverty into a catalyst for economic growth and sustainable development.” The key words here are “sustainable development,” which point to the need for creating working conditions and environmental practices that are sustainable for future generations to enjoy. If the goal is sustainability then most of the social, economic and environmental concerns that these small-scale mining communities face can be addressed and resolved over time. Since a majority of these ASM communities are located in remote areas within developing countries, they struggle with health care, mining safety, water supplies, fair compensation, education, housing, etc.

One such initiative that was supported by the World Bank was a project in Madagascar to help improve and modernize their gemstone mining sector. I personally worked indirectly on this project as a consultant to USAID who was assisting the World Bank in assessing the needs within the gemstone mining sector.

The problem Madagascar faced was that it produced large quantities of colored gemstone rough that were mostly being smuggled out of the country with little benefit to the local mining communities. The goal was to reduce domestic poverty by creating opportunities for added value within mining communities in Madagascar.

The World Bank ultimately supported the Ministry of Mines of Madagascar Mineral Resources Governance Project with a $40 million grant from 2003 to 2010.  This initiative modernized mining law and regulations, created a mining institution, established a gemological institute, developed local gemstone cutting, and promoted all aspects of mining and community development. Though internal politics reduced the scope of the project benefits, it is still regarded as an example of what could be accomplished in developing supplier countries.

Beyond World Bank-sized initiatives; there are smaller programs that have been implemented by individual colored gemstone mining concerns, dealers and retailers. The International Colored Gemstone Association (ICA), CIBJO - The World Jewellery Confederation, and the American Gem Trade Association (AGTA) have promoted such programs among its members of miners and colored stone dealers and retailers. These organizations have been actively involved in numerous conferences regarding ASM issues and global initiatives to improve ethical trade and sustainability. Three of ICA’s members, the Tanzanite Foundation, Gemfields and the Belmont Group are examples of relatively large-scale colored gemstone mining ventures that are dedicated to fair trade as well as socio-economic and environmental sustainability.

The Tanzanite Foundation is a nonprofit entity formed in 2003 by Tanzanite One, which operates a large-scale tanzanite mining operation in Merelani, near Arusha, Tanzania. A portion of all its sales go toward funding the foundation. The Tanzanite Foundation website states that it is “dedicated to protecting and promoting tanzanite. It acts on behalf of all ethical and socially responsible operators and partners in the tanzanite industry and implements standardized methods of practice and conduct. The Foundation seeks to deliver a truly ethical route to market in accordance with the Tucson Tanzanite Protocols.”

Gemfields, with deep roots in mineral resources, is a relative newcomer to gemstone mining. It is a publicly traded company with controlling interests in the Kagem emerald mine in Zambia and a ruby mining venture in Mozambique. Their global mine-to-market campaign promotes traceability as well as fair and ethical trade and environmental sustainability. Their website states that their “dedication to preserving the environment, nurturing relationships with local communities and upholding human rights remains paramount to our success.” They also support the World Land Trust in providing support for conservation projects in Africa. Gemfields only sells rough material to its network of cutters around the globe.

Belmont is a family-owned large-scale emerald mine that strives to not only meet but exceed strict new Brazilian environmental laws. Though their operation is considered large scale for colored gemstone mining, it is still relatively small when compared to large-scale diamond mining.

High-pressure water, used for separating gem material from the ore, is recycled through an extensive natural filtration system. Soil and trees removed during the mining process are replaced as the land is prepared to be fully reclaimed to its original state. Miners are equipped with modern equipment and follow strict safety procedures. They also receive fair pay, health care and even a hearty daily lunch, which I had the pleasure to share with one of the shifts.

So far there are still only a few wholesalers who actively are pursuing fair and ethical trade initiatives but many are discussing how they should move forward. The lack of a large-scale leader has made it difficult for the wholesalers to organize a coordinated effort. There are a few larger companies like the Tanzanite Foundation, Gemfields and Belmont that have set a positive example that others will hopefully follow.

The Responsible Jewellery Council (RJC) has a certification program that sets standards for what it deems are responsible business practices for companies in the jewelry supply chain, ranging from mining to retail. Their initial focus has been on the precious metals supply chain but they will certainly branch out into other sectors as they become more relevant. Their chain-of-custody standards require that the materials be conflict-free as a minimum, and responsibly produced.

Momentum seems to be developing for a viable mine-to-market system of sustainable trade for colored gemstones as more attention is directed at this sector. However, the vast complexities associated with artisanal small-scale mining will continue to hinder progress. An efficient and fair system will require that all sectors of the industry be included in a transparent and inclusive manner.

The development of such a system, that all levels of the supply chain will support, will be essential for its long-term success. In the meantime, miners, dealers and retailers should focus on providing any help to these communities in any way they can -- simple projects to help find water supplies, build schools, supply books, basic gemological training, first aid provisions, mining equipment and safety instruction, mosquito netting, support land reclamation projects, etc. Implementing these small projects will be difficult but our future depends on sustainability as well as ethical trade so future generations can also enjoy these rare and precious creations of nature.

Edward Boehm is the founder and president of RareSource in Chattanooga, Tenn., a company specializing in fine and collectable gemstones, collection sales and acquisitions and museum consulting. He began his gemological studies in Switzerland under the tutelage of his grandfather, Edward J. Gübelin, graduated in geology and German from the University of North Carolina, Chapel Hill, and later obtained a graduate gemologist diploma from the Gemological Institute of America and a certified gemologist title from the American Gem Society. He has worked for the Gübelin Gem Lab in Lucerne, Switzerland, was a museum and laboratory consultant to the GIA, and consulted for USAID as part of a World Bank-sponsored initiative to improve the gemstone sector in Madagascar. His current work takes him to mining localities around the globe as a consultant and buyer.

Michelle Graffis the editor-in-chief at National Jeweler, directing the publication’s coverage both online and in print.

The Latest

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.

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.

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.

Weekly QuizMar 19, 2026
This Week’s Quiz
Test your jewelry news knowledge by answering these questions.
Take the Quiz
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.

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.

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.

Anne Hathaway and Rose Byrne
EditorsMar 16, 2026
2026 Oscars Jewelry: One Necklace After Another

Natalie Francisco rounds up the top Oscars jewels, including Rose Byrne’s Taffin necklace with a more than 20-carat yellow-brown diamond.

Tag Heuer CEO Béatrice Goasglas
WatchesMar 16, 2026
TAG Heuer Has a New CEO

Béatrice Goasglas has been with TAG Heuer since 2018. She is the first woman to head the 166-year-old, LVMH-owned watch brand.

Ben Bridge Jeweler Honolulu boutique
IndependentsMar 16, 2026
Ben Bridge Debuts New Honolulu Boutique

The store features the first in-store build for the jeweler’s in-house “Bella Ponte” bridal brand.

Bonhams fine jewelry Paris
AuctionsMar 16, 2026
Bonhams Paris To Offer Antique, Signed Jewels

The live fine jewelry auction will take place later this week, showcasing antique pieces, rare gemstones, and signed jewels.

Silvia Furmanovich Horse Mane Earrings, Cece Jewellery Underworld Triptych Necklace, Almasika Invictus Flower Brooch
CollectionsMar 13, 2026
A Trio of Jewels from the 3 Gem Award Nominees for Jewelry Design

Our Pieces of the Week honor the 2026 nominees for the Gem Award for Jewelry Design, Silvia Furmanovich, Cece Fein-Hughes, and Catherine Sarr.

Vera Wang
WatchesMar 13, 2026
Citizen, Vera Wang to Launch Watch Collection

The 24-piece watch collection is set to debut in spring 2027.

Andrea Pooler
SourcingMar 13, 2026
Andrea Pooler Joins Third-Generation Diamond Company as COO

Pooler, who has more than 25 years’ experience in jewelry, is now chief operating officer of Modani Jewels, Soham Diamonds, and SNJ Creations.

24 Karat Club banquet
MajorsMar 13, 2026
24 Karat Club of New York’s Banquet to Return to Waldorf Astoria

The reopening of the Waldorf Astoria means a homecoming for the industry group’s annual event, which will take place Saturday.

Zoë Kravitz in Jessica McCormack’s Planetary Necklace
CollectionsMar 12, 2026
Jessica McCormack Sends Gold, Gemstones Into ‘Orbit’

McCormack looked to the 19th century’s “golden age” of astronomy when designing her new celestial-themed collection.

Johnny Nelson Wins David Yurman Gem Award Grant Graphic
Events & AwardsMar 12, 2026
Johnny Nelson Wins David Yurman Gem Awards Grant

Nelson will be honored as the inaugural grant winner at the Gem Awards gala on Friday.

David Berdugo
TechnologyMar 12, 2026
Caratwise Launches, Names Former Signet Exec CEO

The new smart design software allows jewelers to configure, price, and confirm a custom engagement ring in real time for in-store customers.

Woman working at bruting machine, seal at new Grandview Klein factory in South Africa
SourcingMar 12, 2026
Grandview Klein Opens New Factory in South Africa

The 10,000-square-foot diamond manufacturing facility officially opened in late February and employs 50 people.

MJSA Education Foundation logo
Events & AwardsMar 12, 2026
MJSA ‘Future of Jewelry Making’ Scholarship Applications Open

The MJSA Education Foundation’s scholarships support students pursuing jewelry careers.

×

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