Sourcing

Mustang Calls First Ruby Tender Results ‘Disappointing’

SourcingNov 06, 2017

Mustang Calls First Ruby Tender Results ‘Disappointing’

The company’s sale of rough rubies from Montepuez saw only eight of 21 “schedules” sold.

20171106_Mustang-auction.jpg
Mustang said it accepted bids for 29,463 carats at its inaugural tender of rough rubies mined at Montepuez.

Sydney--Mustang Resources held its inaugural tender of rough rubies mined at Montepuez in Mozambique last week, and is less than thrilled with the results.

The tender was held between Oct. 27 and 30 in Port Louis, Mauritius.

Of 21 “schedules” offered, comprised of multiple lots, eight were sold. Bids for the remaining did not reach their reserve prices and will be held over to the next tender.

Mustang said it accepted bids for 29,463 carats of rough rubies ranging in price from $4.59 per carat at current exchange rates to $1,487.19.

Total sale proceeds are about $545,806 for the company, at an average per-carat price of approximately $18.52.

Mustang said the final results “reflected inadequate volumes in each category,” adding that it now will focus on increasing the quantity of rubies it offers within those categories for which demand was the strongest.

Mustang’s Managing Director Christiaan Jordaan called the tender results “clearly disappointing,” but said the company has gathered valuable market intelligence for its future tenders.

“The feedback from buyers and the results make it very clear that we need to offer increased quantities of rubies in each category,” he said. “This is because buyers and their jewelry customers need to be certain that there are enough similar rubies available to enable them to produce the required number of any particular jewelry item. The tender process has also enabled us to identify those categories that are in high demand.”

The next planned plant upgrade at its Montepuez ruby project will be delayed, reducing expenditures and enabling the company to focus on accumulating more rubies in each of those most desired categories ahead of its next tender, slated for mid-2018.

Around 96,000 tons of existing surface stockpiles of ruby-bearing gravels will be processed in the coming months, while pitting and exploration activities will be focused in areas now identified as hosting the most sought-after rubies, Mustang said.

The company said its bulk sampling to date has only covered a small part of the licensed areas and that it strongly believes there is “considerable potential” to identify additional high-value rubies within its project area. Exploration will focus on areas to the east of the existing bulk sample pits.

Mustang also indicated it plans to acquire rights to explore in additional license areas in the Montepuez ruby field.

Brecken Branstratoris the senior editor, gemstones at National Jeweler, covering sourcing, pricing and other developments in the colored stone sector.

The Latest

Bracelets_1872_1052.jpg
Supplier BulletinJul 02, 2026
Elevating Retail Showcases with Today's Necklace & Bracelet Trends

Sponsored by Rio Grande Jewelry Supply

Oscar Heyman Flag Brooch
TrendsJul 02, 2026
Oscar Heyman’s Flag Brooch Celebrates America

The American jewelry house, founded by Latvian immigrants, has been creating American flag brooches since 1917.

D. Geller & Son store mural
IndependentsJul 02, 2026
D. Geller & Son Partners with KSU Art Students on Store Mural

The artwork celebrates the Atlanta jeweler’s legacy and symbolizes its commitment to supporting local artists and its community.

Brought-To-By-Article-Top-Image.jpg
Brought to you by
Wedding Band Trends 2026: Personalization Takes Center Stage

Colored gemstones, artisan finishes, mixed metals, and meaningful details are shaping demand in bridal jewelry.

Hand taking jewelry out of jewelry box
Events & AwardsJul 02, 2026
Stratus Estate Buyers Offers Jewelers Turnkey Buying Events

Its team can evaluate jewelry and watches, as well as luxury handbags, artwork, and collectibles.

Weekly QuizJul 01, 2026
This Week’s Quiz
Test your jewelry news knowledge by answering these questions.
Take the Quiz
Hand holding a gas pump
SurveysJul 01, 2026
Consumer Confidence Ticks Up in June

Falling oil prices were a factor in the slight month-over-month improvement.

Rio Grande Millgrain Wedding band and Round Diamond Engagement Ring
CollectionsJul 01, 2026
Rio Grande Launches First Finished Bridal Collection

The new offering comprises more than 120 bridal and engagement ring styles with natural and lab-grown diamonds.

DCA-NJ-article-1872x1052-060826.jpg
Brought to you by
Building the Future of Jewelry Retail: DCA Expands Education, Leadership Development, and Workforce Solutions

DCA is preparing the next generation of professionals by supporting workforce development, leadership growth, and career advancement.

Rockefeller Center Rink Rolex Clock
WatchesJul 01, 2026
Rolex Unveils Clock at Rockefeller Center

The clock is part of the celebration for the soon-to-open Rolex headquarters on New York City’s Fifth Avenue.

Kristen Cannon
IndependentsJul 01, 2026
Kristen Cannon of Valobra Master Jewelers Dies at 49

The public relations professional is remembered for her benevolent generosity and unwavering commitment to those around her.

G Shock Pokemon watch in Pokeball
WatchesJun 30, 2026
Pokémon Fans Will Want to Catch This New G-Shock Watch

The new watch commemorates Pokémon’s 30th anniversary.

Saks Fifth Avenue door sign
MajorsJun 30, 2026
Saks Global Emerges From Bankruptcy With New Name

The luxury retailer is now called Exemplar Luxury Group.

Jade Ruzzo Lady Collection Compact Mirror Necklace
CollectionsJun 30, 2026
Jade Ruzzo’s New Collection Embodies the Art of Being a Lady

The “Lady” collection is a new take on old beauty standards with gemstone-adorned hair pins and combs, a compact mirror necklace, and more.

American Gem Society
GradingJun 30, 2026
AGS Opens 2026 Recertification Exam

All active members who earned their credential or designation before Dec. 1, 2025, are required to recertify.

Briony Raymond Carousel Collection Campaign Imagery
CollectionsJun 29, 2026
Briony Raymond’s New Collection Is a ‘Carousel’ of Hard Stones

The new jewelry collection uses a colorful palette of onyx, malachite, tiger’s eye, mother-of-pearl, lapis, turquoise, and coral.

Lee Michaels Fine Jewelry Ridgeland Mississippi exterior
IndependentsJun 29, 2026
Look Inside Lee Michaels’ Revamped Mississippi Flagship

Lee Michaels Fine Jewelry is celebrating 30 years in the Ridgeland, Mississippi community.

Sean Milliner
GradingJun 29, 2026
National Rarities Announces New Gemology Manager

Sean Milliner has joined the company.

GIA London Canary Wharf campus
GradingJun 29, 2026
GIA to Open New London Campus

Classes will begin in August at GIA’s new Canary Wharf location.

Hogback diamond ring
AuctionsJun 26, 2026
‘Hogback’ Diamond Ring Finds a New Home

A ring set with “hogback” diamonds, an early stone cut dating to around the 16th century, sold for more than $20,000 at a U.K. auction.

Kris Averi Rainbow Prism Thorn Ring
CollectionsJun 26, 2026
Strength Is Sharpened Into Beauty in Kris Averi’s ‘Prism Thorn’ Ring

The rainbow version of the ring, our Piece of the Week, features angel-cut, octahedral lab-grown sapphires designed to be worn as armor.

A tray of Rembrandt charms
MajorsJun 26, 2026
Rembrandt Charms Debuts ‘Charms That Give Back’

The new initiative donates a portion of the proceeds from select charms to charitable causes.

Bernard James Knickerbockers Special Edition Aura Band
TrendsJun 26, 2026
Bernard James Celebrates Knicks’ Win with Ring

The Brooklyn-based jeweler created a limited-edition version of its “Aura” eternity band, set with gemstones in the team’s colors.

Brandee Dallow
SourcingJun 25, 2026
ICA Names Brandee Dallow as CEO

Dallow will lead the International Colored Gemstone Association, effective July 6.

SCAD Jewelers Mutual Studio exterior
EditorsJun 25, 2026
Out & About: How Jewelers Mutual, SCAD Are Tackling the Bench Jeweler Shortage

Senior Editor Lenore Fedow headed to Savannah to learn more about the 10-year, $10 million partnership between JM and the art school.

Mejuri Steel Collection Campaign Imagery
CollectionsJun 25, 2026
Mejuri Experiments With Steel

Its new capsule jewelry collection features gold-finished stainless steel pieces designed for a maximalist look without a luxury price tag.

Watches and Wonders 2027
Events & AwardsJun 25, 2026
Watches & Wonders Announces 2027 Dates

The week-long event in Geneva is slated for April 2027.

New Gem Legacy board members Annie Doresca, Mark Smelzer, Sara Yood
SourcingJun 25, 2026
Annie Doresca, Mark Smelzer, Sara Yood Join Gem Legacy Board

The three industry leaders bring financial, communications, and legal expertise to the nonprofit’s board of directors.

×

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