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

Robinson Pelham Tsar Star Earrings in Blaze
CollectionsDec 05, 2025
Piece of the Week: Robinson Pelham’s ‘Tsar Star’ Earrings

The new pink sapphire version of the piece dances with its wearer in the brand’s “Icons After Dark” holiday campaign.

Pantone 11-4201 Cloud Dancer
TrendsDec 05, 2025
Pantone’s Color of the Year for 2026 Is … White

A choice that’s generated a lot of commentary, Pantone says “Cloud Dancer” marks a fresh start and encourages relaxation and creativity.

Stuller holiday 2025
MajorsDec 05, 2025
Stuller Releases ‘Wrapped in Wonder’ Campaign

The manufacturer’s holiday campaign features a gift guide filled with trending designs and jewelry that can be personalized.

Recipients Collage 2025 - NJ (1872 x 1050 px) (1872 x 1052 px).png
Brought to you by
Impacting Tomorrow Today

How Jewelers of America’s 20 Under 40 are leading to ensure a brighter future for the jewelry industry.

Fabergé x 007 Octopussy egg and pendant
CrimeDec 04, 2025
Man Arrested After Allegedly Swallowing Fabergé Egg Pendant

The man was charged with theft, accused of ingesting the necklace while in a jewelry store in Auckland, New Zealand.

Weekly QuizDec 04, 2025
This Week’s Quiz
Test your jewelry news knowledge by answering these questions.
Take the Quiz
Exterior of renovated and expanded J.R. Dunn Jewelers
IndependentsDec 04, 2025
Step Inside JR Dunn Jewelers’ Giant New Store

The Florida independent expanded its store from 8,000 to 14,000 square feet, fulfilling the vision of its late co-founder, Jim Dunn.

DD-Email-Image-1872x1052 (1).jpg
Supplier BulletinDec 04, 2025
Introducing Shop Natural Day: A New Movement Celebrating Natural Diamonds

Sponsored by De Beers Group

roseco-catalog.png
Brought to you by
Roseco Releases New Full-Line Catalog

Roseco’s 704-page catalog showcases new lab-grown diamonds, findings, tools & more—available in print or interactive digital editions.

G-Shock DWN5600 Ring
WatchesDec 04, 2025
Casio Shrinks its G-Shock Watch

The classic 5600 series G-Shock has been scaled down to about a tenth of its size, becoming a fully functioning watch ring.

Accredited Gemologists Association logo
Events & AwardsDec 04, 2025
AGA Announces 2026 Tucson Speaker Lineup

The association’s annual conference and gala will take place Feb. 4, 2026, during the Tucson gem shows.

 CBG logo
Events & AwardsDec 04, 2025
CBG Announces Speaker Lineup for 2026 Miami Event

The January show will include a workshop for jewelry retailers on implementing AI to strengthen their businesses.

Miley Cyrus and Maxx Morando Engagement Ring
TrendsDec 03, 2025
Miley Cyrus Debuts Edgy Engagement Ring

Fellow musician Maxx Morando proposed to the star with a chunky, cushion-cut diamond ring designed by Jacquie Aiche.

Costco store
Policies & IssuesDec 03, 2025
Costco Joins Growing Wave of Retailers Suing for Tariff Refunds

The retailer, which sells billions in fine jewelry and watches, is suing the Trump administration and U.S. Customs and Border Patrol.

Shoppers in a mall
SurveysDec 03, 2025
A Record 202.9M Shoppers Turned Out Thanksgiving Weekend

Black Friday is still the most popular shopping day over the five-day holiday weekend, as per the National Retail Federation’s survey.

Faberge The Winter Egg
AuctionsDec 03, 2025
Fabergé’s 'The Winter Egg' Achieves Record $30M

The historic egg, crafted for Russia's ruling family prior to the revolution, was the star of Christie’s recent auction of works by Fabergé.

Vera Wang Love lab grown diamond engagement ring
FinancialsDec 02, 2025
Signet Jewelers’ Q3 Sales Up Amid Continued Focus on Lower Price Points

The retailer offered more fashion jewelry priced under $1,000, including lab-grown diamond and men’s jewelry.

Briony Raymond holding Briony Raymond Eau De Parfum
CollectionsDec 02, 2025
Briony Raymond Introduces First Fragrance

The eau de parfum is held in a fluted glass bottle that mirrors the decor of the brand’s atelier, and its cap is a nod to its “Sloan” ring.

The Finsch diamond mine in South Africa, owned by Petra Diamonds Ltd.
SourcingDec 02, 2025
Petra Diamonds Elevates Interim CEOs to Permanent Status

Vivek Gadodia and Juan Kemp, who’ve been serving as interim co-CEOs since February, will continue to lead the diamond mining company.

Lee Krombholz, Michael Coan, Donna DeLucia, Joanna Joy Seetoo
MajorsDec 02, 2025
Lee Krombholz Takes Over as Chair of MJSA Education Foundation

In addition, a slate of new officers and trustees were appointed to the board.

Retail Jewelers Organization logo
IndependentsDec 02, 2025
RJO Welcomes Its 1,200th Retail Member

Witt’s Jewelry in Wayne, Nebraska, is the organization’s new milestone member.

Gemologist, geologist, and editor Brendan M. Laurs
SourcingDec 02, 2025
Brendan Laurs Honored With 2025 Bonanno Award

Laurs is the editor-in-chief of Gem-A’s The Journal of Gemmology and an expert on the formation of colored gemstone deposits.

Empress Eugénie pearl and diamond tiara
CrimeDec 01, 2025
Fourth Man Charged in Louvre Jewelry Heist

The man, who has a criminal history, is suspected of being the fourth member of the four-man crew that carried out the heist.

Van Cleef & Arpels zipper necklace Christies
AuctionsDec 01, 2025
Christie’s Presents ‘Splendor & Style’ Collection

The single-owner collection includes one of the largest offerings of Verdura jewels ever to appear at auction, said Christie’s.

Lustig Jewelers employees in store
IndependentsDec 01, 2025
Lustig Jewelers’ New Owner Is a Fellow Chicago Jeweler

Michael Helfer has taken the reins, bringing together two historic Chicago jewelry names.

Retrouvaí Classic Diamond Domino Necklace and Kwiat Entwine Platinum and Diamond Drop Earrings
MajorsDec 01, 2025
PGI Debuts Platinum-Filled Holiday Gift Guide

The guide features all-new platinum designs for the holiday season by brands like Harwell Godfrey, Ritani, and Suna.

Movado Connect 2.0 watches
FinancialsNov 26, 2025
Movado CEO Talks Tariffs, Growing Interest in Accessible Luxury Watches

During its Q3 call, CEO Efraim Grinberg discussed the deal to lower tariffs on Swiss-made watches, watch market trends, and more.

Rosior Pumpkin Ring
TrendsNov 26, 2025
Piece of the Week: Rosior’s Pumpkin Ring

Rosior’s high jewelry cocktail ring with orange sapphires and green diamonds is the perfect Thanksgiving accessory.

×

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