Editors

What It’s Like to Be a Field Gemologist, Part 2

EditorsMar 08, 2018

What It’s Like to Be a Field Gemologist, Part 2

Vincent Pardieu talks the green gem he’ll focus on this year, how the sector can work with conservation efforts and the knowledge many are lacking.

20180308_Header.jpg
Field gemologist Vincent Pardieu and his team went to Ethiopia in December. Here he is pictured holding a piece of emerald associated with mica and quartz collected as a reference sample for the Danat lab from Dogogo pit of the WGM mine. (Photo credit: Raphaelle Cousteix /Danat)

Vincent Pardieu has established a career that sees him jetting around the world to gather gemstones from the source for industry laboratories. To hear him tell it, it’s tough, important work that can also take him to interesting places and allows him to meet fascinating people.  

In the second part of a two-part Q&A with the field gemologist, we talk about memorable moments in his career, where it could take him next and challenges in the market today.

(Revisit the first half of our conversation here.)

National Jeweler: Is there a project or trip that is particularly memorable to you, whether that’s for a good or bad reason?

Vincent Pardieu: Mozambique is a very special place to me because that currently is the world’s leading source for rubies. I went to Mozambique at the very beginning. I was the first foreigner, the first gemologist, to be able to visit it and I have visited this ruby deposit every year since.

But it’s not just that. It’s these stories that happen to me. I was able to meet the people from the ruby deposit in Montepuez because of people from the Niassa Reserve, so then I started to collaborate with the people from the Niassa Reserve. They are conservationists. If I want to go to an area that is dedicated to conservation, I have to ask them for permission.

I started collaborating with them and gained some interest in the Niassa Lion Project. Now, every time I go to Mozambique, I go to visit the ruby mine and I also go to visit Niassa to understand the interaction between mining and conservation because I was able to see that, in some cases in Africa, you have some discoveries of gemstones inside areas dedicated to conversation.

Sometimes it turns out to be a win-win situation because the miners and the people in charge of conservation collaborate. But in other cases, it’s a total disaster because they have conflicts.

I was able to see some very positive stories, for example in Kenya, where you have mining inside Tsavo National Park. I was able to meet Campbell Bridges during my first visit to Africa in 2005, and I was very impressed to see that he named a stone after the national park and was mining these stones just inside Tsavo and trying to support conservation in this area, helping

the national park to fight against poaching and things like that. So there was a positive synergy between the park, tsavorite and tsavorite miners.


But that’s not always the case. Like recently in Madagascar, where you have some sapphire discoveries inside one of the last protected forest areas, you have thousands of miners invading the protected area and now there is a direct conflict between the conservationists trying to protect this area and sapphire traders and miners.

So I’m trying to help find some solutions because, from what I see, in some areas conservation and gem mining can work together, and there are some opportunities for the gem trade and conservation to collaborate, but if there are conflicts, I think it can be very dangerous for the gem trade because we are making enemies that we don’t really want to make.

NJ: So in these situations, you’re sort of playing a role where you are also trying to help figure out how to branch the two, as well as doing the field research?

VP: Yes. Because I need to speak with them in order to access these areas. When I go to an area, I go to see the authorities, and sometimes there are some security issues so I have to ask for permission. And of course, every time I speak with the authorities, they ask me my opinion (about the mining sites), because very regularly I see that the guys in charge never have visited the sites. So I try to convince them to, No. 1, let me go, and maybe let me go with some policemen or some technicians.

Then I come back and I tell them what I have seen. The whole time there is collaboration because I need to get access and be able to collect some samples, and in exchange I provide them with information and with some advice.

NJ: Is there anywhere you haven’t been or any projects you haven’t started yet that you would still like to do?

VP: There are a lot of places. During the past eight years for GIA I focused on rubies and sapphires, but this year I think I will focus on emeralds. I plan to visit quite a lot of emerald deposits in the coming year, so probably go to Brazil, Colombia and some other emerald sites I haven’t visited yet, like Madagascar and Austria. I visited some emerald mines when they were close to the ruby and sapphire mines. Emerald was my priority No. 3, and now it’s becoming my priority No. 1.

There are plenty of countries where I haven’t put my feet and with this focus on emerald, I will be able to find a good reason to go there. That will be fun.

NJ: To take a broad look at the market, from your perspective, what are some of the biggest challenges that the colored gemstone sector faces today?

VP: There are multiple. There is always the challenge that most people understand very, very little about colored stones and they have a very limited knowledge about colored stones, so this creates an opportunity for some to take advantage of the lack of knowledge.

(Specifically I’m talking about) technical knowledge about, for example, synthetic treatments and how to speak about treatment. The trade still doesn’t know how to speak about treatment. They are trying to avoid it because treatment sounds bad. Many people in the trade are afraid to speak about treatments so they prefer not to, so (the challenge is) how to handle treatment, how to communicate about treatment, how to explain to the customer that treatment is not always a bad thing.
“The trade still doesn’t know how to speak about treatment. They are trying to avoid it because treatment sounds bad. Many people in the trade are afraid to speak about treatments so they prefer not to.”
For many mining areas now, you need treatment. If you don’t have treatment, only maybe less than 1 percent of the production would be able to find a market. But I don’t know any business that can survive with 1 percent of production. If there is a mining area that is active, it’s probably because there is a treatment. And, actually, untreated stones are a byproduct of mining for a stone that will be treated.

For example, rubies; to find rubies that don’t need heat treatment, there might be one stone like that out of 100. But if the 100 don’t find a market, it will not be profitable for the miner to work the project.

It’s very difficult. The miners have to be able to sell their daily production to be able to survive. Most of the miners don’t have enough capital to survive until they get an exceptional stone. Mining is not about getting exceptional stones; it’s about getting some stones and then from time to time, there will be an exceptional stone. This is one of the difficulties the trade has. 

Also, speaking about origin; origin is complicated because there are many different labs with different opinions. Some labs are not doing research, some labs are. But they still all have an opinion. And the final customer has the problem of figuring out which labs they should trust the most.

For colored stones, it’s complicated because you have a great variety of choice—so many stones and so many colors. Many people feel lost because they don’t know who to trust, they feel like there’s so much to learn and they don’t know enough so maybe they should think about buying something else. How to maintain the trust in the product—I think the colored stone sector has a lot to improve in that area.
Brecken Branstratoris the senior editor, gemstones at National Jeweler, covering sourcing, pricing and other developments in the colored stone sector.

The Latest

The Edit – A Gallery of Italian Jewelry Masterpieces Graphic
Events & AwardsOct 17, 2025
An Edit of Italian Jewels Is Coming to NYC

The new showcase dedicated to Italian jewelry design is set for Oct. 29-30.

Judi Powers Jewelry Stella Earrings
TrendsOct 17, 2025
Piece of the Week: Judi Powers Jewelry’s ‘Stella’ Earrings

Take a gaze at the sky with this pair of platinum diamond-set star earrings with blue lace agate drops.

Charles London, Mayer and Fran Udell, Mark and Candy Udell
IndependentsOct 17, 2025
From the Jazz Age to the Information Age: London Jewelers Turns 100

In 2026, the jewelry retailer will celebrate a milestone only a small percentage of family-owned businesses survive to see.

LIM-401 2024 National Jeweler Supplier Bulletin- iD100 Web and Eblast FINAL (2) (1).jpg
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.

Jeffrey Zimmer Reeds Jewelers
IndependentsOct 16, 2025
Retailer Hall of Fame 2025: Jeffrey Zimmer

Jeffrey Zimmer's decades of leadership at Reeds Jewelers are defined by integrity, a love of sourcing gemstones, and a heart for community.

Weekly QuizOct 16, 2025
This Week’s Quiz
Test your jewelry news knowledge by answering these questions.
Take the Quiz
Sothebys salon new bond street
AuctionsOct 16, 2025
Sotheby’s Introduces Custom Jewelry Service

The new high jewelry design and production process takes 30 days or less from concept to completion, the auction house said.

Oscar Heyman 2025 Holiday Catalog Cover
MajorsOct 16, 2025
Oscar Heyman’s Holiday Catalog Is Out, and It’s Spectacular

The holiday catalog for 2025 features never-before-seen images of more than 100 one-of-a-kind masterpieces.

ja_fall_2024_by_headshot_stories_6824.jpg
Brought to you by
JA New York Fall Is Right Around the Corner

The upcoming show provides savvy retailers with the opportunity to stock their cases with best sellers in advance of the holiday season.

Foundrae United in Love Campaign Imagery
CollectionsOct 16, 2025
Foundrae Adds To ‘United in Love’ Collection

The brand has released a second installment of its collection of traditional and non-traditional commitment heirlooms.

Kathy Corey
IndependentsOct 15, 2025
Retailer Hall of Fame 2025: Kathy Corey

Corey rescued New England chain Day’s Jewelers, preserving its legacy with strong people skills, pragmatism, and a “get-it-done” attitude.

Colorado jeweler Peter Damian Arguello
CrimeOct 15, 2025
Men Receive Lengthy Prison Sentences for 2023 Murder of Colorado Jeweler

Charles Robinson Shay was sentenced to life in prison plus 120 years while his accomplice, Michael James McCormack, got 75 years.

Douriean Fletcher Messenger Collection
Events & AwardsOct 15, 2025
‘Douriean Fletcher: Jewelry of the Afrofuture’ Opens at MAD

The Museum of Arts and Design's new exhibition features 75 pieces by the designer, best known for her work in the “Black Panther” films.

Logo for Timepieces at Luxury
Events & AwardsOct 15, 2025
JCK, Luxury to Debut New Watch Section in Vegas Next Year

Timepieces at Luxury will take place at The Venetian and, like Luxury, will be invitation-only for the first two days.

Max Fawcett Claibourne Poindexter
AuctionsOct 15, 2025
Christie's Announces New Jewelry Department Leadership

The auction house named a new global head of jewelry, as well as a new head of the jewelry department for the Americas.

Schwanke-Kasten Jewelers, Tom Dixon
IndependentsOct 14, 2025
Retailer Hall of Fame 2025: Tom Dixon

As chairman of Schwanke-Kasten Jewelers, Tom Dixon has been tasked with honoring the past and shaping the future of the family-run store.

Katty Villapando Lyte and Mica Rencher of Shimmer LLC
Events & AwardsOct 14, 2025
Here Are the Winners of the BIJC, JA ‘Emerging Jewelers’ Grant

Katty Villapando Lyte and Mica Rencher received a $10,000 grant for their business, Shimmer Culture LLC.

Cooper Flagg family at Day’s Jewelers
IndependentsOct 14, 2025
Day’s Jewelers Crafts Custom Jewelry for No.1 NBA Draft Pick Cooper Flagg

The parents of the Dallas Mavericks rookie bought their engagement ring at a Day’s store in Bangor, Maine, in 1997.

Pragnell Kitulo Garnet collection
SourcingOct 14, 2025
Pragnell Debuts Kitulo Garnet Jewelry

The UK-based brand sourced the gemstones, which are fully traceable, from an artisanal mining community in Tanzania.

Astrid & Miyu 2025 12-Day, 24-Day, Solid Gold Advent Calendars
CollectionsOct 10, 2025
Count Down to the Holidays With Astrid & Miyu’s Advent Calendars

The trio of Advent calendars include a version with 18-karat gold and lab-grown diamond jewelry in a red lacquer jewelry box.

Front of Marla Aaron porcelain Nymphenburg Lock
CollectionsOct 10, 2025
Piece of the Week: Marla Aaron’s ‘Nymphenburg Lock’

Created in collaboration with Nymphenburg Porcelain, the lock is part of a four-piece collection that took two years to bring to fruition.

Alisa Bunger Frederick Goldman
MajorsOct 10, 2025
Frederick Goldman Names New VP of Sales

Jewelry industry veteran Alisa Bunger has taken on the role.

Feriel Zerouki, De Beers Chief Trade and Industry Officer
SourcingOct 09, 2025
Feriel Zerouki Is Leaving De Beers

The company and industry leader’s two-decade tenure with De Beers will come to a close at the end of the month.

Fabergé Imperial Winter Egg
AuctionsOct 09, 2025
This Fabergé Egg Could Crack $27M At Auction

“The Winter Egg” set the world auction record for a Fabergé piece twice at previous Christie’s sales.

Kessler watch battery recycling program
MajorsOct 09, 2025
Sy Kessler Buying Watch Batteries as Silver Hits Record High

The company will pay 1.5x silver’s current spot price for each pound of silver oxide batteries submitted.

Katkim Men’s Collection Shadow Pendant Necklace and Anerise Signet Band
CollectionsOct 09, 2025
Katkim Launches First Men’s Collection

The line includes a “Shadow” series crafted exclusively for the new men’s offering and reimagined styles from the brand’s core collections.

Gemfields Rough Rubies
SourcingOct 09, 2025
Gemfields’ Mini Mixed-Quality Ruby Auction Garners $11M

The rough on offer was recovered from a newer area at the Montepuez mine.

“Storied Diamond Desert Sands of Eternity” engagement ring and wedding band
SourcingOct 08, 2025
In ‘Storied Diamond,’ Jared Jewelers Is Emphasizing the Journey

The retailer’s new collection of engagement rings and fashion jewelry is set with natural diamonds that are traceable via blockchain.

×

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