Sourcing

What You Should Know About the Company Mining in Yogo Again

SourcingJan 03, 2023

What You Should Know About the Company Mining in Yogo Again

Yogo Mine in Montana, which produces the popular Yogo sapphires, was dormant for nearly four decades.

20221220_Yogold-header.jpg
Yogold USA is producing in the previously dormant Yogo Mine in Montana. Here is a shot of some of the company’s Yogo sapphire production, mostly rough and one faceted gem.
Yogo Gulch, Montana—The Yogo Mine in Montana is producing again, thanks to Yogold USA.

The mine, which produces the popular Yogo sapphires, was dormant for nearly four decades.

A few years ago, Yogold USA entered the arena. The mining company first entered into an exploration agreement, which ended December 31, 2022, and then it transitioned into a lease with an option to purchase.

Its lease and option consist of 1,563 acres of deeded ground, where the company is simultaneously engaged in commercial production and underground development as well as surface exploration, President Jerod Edington confirmed to National Jeweler. 

There are two historic workings in the mine. 

A British group conducted surface mining on top and eventually sunk a shaft to 250 feet underground. 


A group of Americans, meanwhile, went straight into the side of the mountain and back about 700 feet, essentially hand mining the whole way.

The Kunisaki Group then purchased the mine in the 1970s and drove a haulage way parallel to the American mine; the haulage way is approximately 3,000 feet long and is referred to as the “Kunisaki Tunnel,” Edington said.

The first two seasons Yogold operated the Yogo Mine—in 2020 and 2021—the company was doing only surface mining with the intent of eventually moving underground.

This season, Yogold opened the Kunisaki Tunnel and portions of the American mine, which run parallel to each other. The company is about 700 feet back in the Kunisaki Tunnel now.

The team is using low profile underground excavators and hauling underground trucks, so right now they are producing about 75-100 tons of underground ore per day and will increase production as demand for its Yogo sapphires dictates.

This year, they installed buildings at the site so they can mine and process all winter.

20221220_Yogold-3.jpg
A sample of rough sapphires from the Yogo Mine


Yogold splits cutting up by size—the company has financed its own cutting facility in Colombo, Sri Lanka for the smaller stones (generally under 0.5 carats), and there are three master cutters in the U.S. that focus on the larger stones. 

The company is also working with some lapidaries on fantasy cutting—GIA defines this as concave cuts made on the back of gemstones—for some of the thinner stones that wouldn’t necessarily make sense to facet traditionally and could see a higher yield with an alternate cut.  
https://www.gia.edu/munsteiner-gem-cut

One thing Yogold would like to be more involved in next year is jewelry production, Edington said. They have custom-made a few pieces to test ideas and develop samples. 

For right now, though, its focus is on the wholesale side. 

And so far, Yogold has been able to sell everything it produced. 

“The demand is substantial,” Edington said. “We can’t even come close to filling all the orders that we have right now. That’s a great position to be in.”

The Latest

Taylor Swift engagement ring Greenwich St
TrendsOct 22, 2025
The Taylor Swift Effect: Antique Diamonds Edition

The superstar’s August engagement put the stamp of approval on an already hot engagement ring trend.

Rahaminov Diamonds Emerald-Cut Diamond Bracelet
TrendsOct 22, 2025
Don’t Forget These Diamond Jewelry Trends When Stocking for the Holidays

Retailers should offer classic styles with a twist that are a perfect fit for layered looks, experts say.

Fancy vivid purplish pink diamond
AuctionsOct 22, 2025
Pink Diamond, Vanderbilt Jewels to Headline Phillips’ Geneva Auction

The nearly 7-carat fancy vivid purplish pink diamond could sell for around $9 million.

BTYB10.25_Header.jpg
Brought to you by
Are Earrings an Overlooked Category? What Retailers Need to Know Now

As the holiday season quickly approaches, consider stocking one category that sometimes gets overlooked: earrings.

Tiffany & Co. Bird on a Rock by Tiffany High Jewelry Lariat
CollectionsOct 22, 2025
Tiffany & Co.’s ‘Bird on a Rock’ Finds New Perch

Chief Artistic Officer Nathalie Verdeille has reimagined the iconic design in both figurative and abstract creations.

Weekly QuizOct 16, 2025
This Week’s Quiz
Test your jewelry news knowledge by answering these questions.
Take the Quiz
Jewelers for Children Halloween contest
Events & AwardsOct 22, 2025
JFC Kicks Off Halloween Costume Challenge

Five dollars buys one vote toward an industry professional you want to see dressed up as a hero, or a villain, this Halloween.

Hillsborough show
Events & AwardsOct 22, 2025
Hillsborough Antique Show Gets New Owner

Recently acquired by KIL Promotions, the November edition of the public show in San Mateo, California, will be held Nov. 7-9.

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.

Bicolor pink and colorless diamond
GradingOct 21, 2025
GIA Examines Rare Bicolor Pink Diamond

The stone’s two zones, one pink and one colorless, may have formed at two different times, the lab said.

Pomellato Rodeo Drive Flagship Exterior
MajorsOct 21, 2025
Pomellato Brings ‘Global Attitude’ to Rodeo Drive Flagship

Hollywood glamour meets Milanese sophistication in the design of Pomellato’s new store in Beverly Hills, California.

Grown Brilliance NYC Flagship Exterior
Lab-GrownOct 21, 2025
Grown Brilliance Opens First Flagship

The New York City store showcases a chandelier with 1,500 carats of lab-grown diamonds designed by an FIT student.

Douriean Fletcher Messenger Collection
Events & AwardsOct 21, 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.

Sothebys the glowing rose pink diamond
AuctionsOct 20, 2025
Sotheby's To Auction 10-Carat Vivid Pink Diamond

Making its auction debut, "The Glowing Rose" is expected to fetch $20 million at the November jewelry sale in Geneva.

Empress Eugénie’s pearl and diamond tiara
CrimeOct 20, 2025
See the ‘Priceless’ Jewels Stolen During Daytime Heist at the Louvre

It took the masked thieves less than 10 minutes to steal eight irreplaceable jewels from two display cases in the museum’s Apollo Gallery.

Lauren Gayda
SourcingOct 20, 2025
Pristine Gems Names New Director of European Sales

Gemologist Lauren Gayda has previously worked at The Clear Cut, Taylor & Hart, and Effy Jewelry.

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.

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.

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.

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.

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.

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.

×

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