PodcastsAug 20, 2026
Episode 8: Diamond Industry Update With David Bonaparte & Ronnie VanderLindenThe industry veterans join the podcast to discuss diamond marketing, the FTC Jewelry Guides, and lobbying for lower tariffs.
SourcingFeb 25, 2019
Gemfields Opens $15M Automated Sort House in Mozambique
The colored stone miner said the state-of-the-art facility will significantly raise production levels.
Gemfields said its new $15 million sort house in Mozambique features an automated process to allow for greater production levels.
London—Gemfields has opened a $15 million ruby sort house at its Montepuez ruby mine in Mozambique.
The colored stone miner said the state-of-the-art facility will significantly raise production levels, allowing it to “consistently deliver a greater volume and spectrum” of rubies.
It uses the natural properties of rubies as a means for automated sorting, Gemfields said.
The raw material is first washed and then passed under ultraviolet light. Since rubies naturally fluoresce under UV light, optical sorters can detect the fluorescence and then use blasts of air to direct individual rubies to separate channels for further sorting and grading.
Gemfields said using programmable logic controllers and data software under the UV light is faster, more reliable and more efficient than the human eye. It also allows for the identification of a finer material component than before.
The facility also accommodates more wash plants, now washing the equivalent of 10,000 tons of ore per day.
“Previously the sorting of rubies was largely manual, but it is very exciting to now introduce automated sorting, which will require minimal manual sorting,” said Kaung San, the company’s ruby grading supervisor. “Our productive capacity will increase exponentially.”
Gemfields said the automation of the sorting process won’t result in a reduction in its workforce.
In fact, increased productivity at the sort house means Gemfields will expand its current active mining area, requiring the company to hire more people.
The colored stone miner also said the manual aspect of the sorting process—the categorization and grading of the rubies—will require more highly skilled employees. Rather than look outside the country for this expertise, Montepuez is training a group of Mozambican gemologists who will specialize in the selection and classification of rubies.
Gemfields said its $15 million investment in the sort house is the largest of its kind in the Cabo Delgado province of Mozambique.
Looking ahead, the colored stone miner said the new sort house will be complemented by the addition of a new thickener to the wash plant this year, increasing capacity from 125 tons per hour to 150 tons per hour.
Two high-capacity pre-screen plants also will be added to remove the finer particle material prior to being fed to the wash plant, resulting in a greater concentration of material of the desired size.
Editors' Picks
Sponsored by
More on Sourcing
The Latest
TechnologyAug 20, 2026
A New AI-Powered Gemstone Identification App Is HereFounder Vik Westermann said the app is a “starting point” to inspire people to work with appraisers and gem labs, not replace them.
AuctionsAug 20, 2026
Storied Unicorn Brooch Up for Auction Gallops to New Home The Verdura brooch, which belonged to the late Virginia Fortune Ryan Ogilvy, was sold to a private collector in Asia.
Brought to you by
Your Piece Could Be the One Editors Talk AboutSubmit your pieces for a chance to win in this year's competition.
Events & AwardsAug 20, 2026
MJSA Education Foundation Names 5 Scholarship WinnersThe five students were awarded a total of $10,000 through the nonprofit’s 2026 “Future of Jewelry Making” scholarship.
Weekly QuizAug 13, 2026
This Week’s QuizTest your jewelry news knowledge by answering these questions.
MajorsAug 20, 2026
Plumb Club Elects 2026-2027 BoardSteven Lerche is now beginning his term as the youngest member to become president of The Plumb Club’s elected executive committee.
MajorsAug 19, 2026
Mike Alexander To Succeed Scott Murphy as Jewelers Mutual CEO Murphy will retire at the end of the year and Alexander, currently the company’s president, will take over at the start of 2027.
Brought to you by
Why More Jewelry Retailers Are Hosting Turnkey Estate Buying EventsRetailers are seeking new ways to attract customers, increase traffic, and create revenue – Estate buying events are a popular solution.
Policies & IssuesAug 19, 2026
Spinelli Kilcollin Embraces Dupes With Trade-In ProgramThe jeweler is encouraging customers who own lookalike rings to come into the store and trade them for credit towards an authentic piece.
MajorsAug 19, 2026
Zales Wants You to Wear Fine Jewelry Every DayThe new campaign, “You Are The Occasion,” discourages shoppers from saving their fine jewelry for special occasions only.
CrimeAug 18, 2026
2 California Men Arrested in Fatal Vehicle Smash RobberyOne is the driver who allegedly crashed a car into a Sacramento jewelry store in April, striking a 71-year-old employee who later died.
ColumnistsAug 18, 2026
Peter Smith: The IKEA Effect and Bridal Branding In a new column, Peter Smith posits that people actually enjoy putting together IKEA furniture, and the same is true for engagement rings.
CrimeAug 18, 2026
Thieves Snatch $1M in Jewelry From New Jersey Jeweler9lakha Jewelers in Iselin, New Jersey, was the target of a smash-and-grab robbery on Aug. 8.
Lab-GrownAug 18, 2026
Ring Concierge, Kendall Jenner’s Tequila Brand Collab on GiveawayThe jeweler has partnered with 818 Tequila to gift lab-grown diamond studs to a bride-to-be and their bridal party.
Events & AwardsAug 17, 2026
Exhibition on Louis Comfort Tiffany’s Studios to Open at The MetThe exhibition will feature more than 100 drawings of stained-glass lampshades, windows, and more, many created by women and émigrés.
CollectionsAug 17, 2026
Marquise Diamonds Dance in Spinelli Kilcollin’s ‘Wren’ CollectionMarquise-cut diamonds in drop charms are the center of the new collection, reflecting the movement of a dancer in modular styles.
Events & AwardsAug 17, 2026
There’s a New Jewelry Show Coming to FloridaThe inaugural Fort Lauderdale Jewelry, Antique, & Object Show will be held from Jan. 28 through Feb. 1, 2027.
IndependentsAug 14, 2026
Smyth Jewelers to Open Fourth LocationThe family-owned jeweler will open a new showroom in Bel Air, Maryland, this fall.
CrimeAug 14, 2026
Wife of Man Convicted in Jeweler’s Murder Sentenced for Conspiracy Amanda Ileana Hernandez is married to Carlos Hernandez, one of two men in prison for the 2024 murder of Michigan jeweler Hussein Murray.
TrendsAug 14, 2026
Paul Morelli’s Latest ‘Wavey Vine’ Earrings Embrace ColorThe reimagined jewel, our Piece of the Week, trades the diamonds in the original 1998 design for blue, pink, yellow, and green sapphires.
Supplier BulletinAug 13, 2026
Your Piece Could Be the One Editors Talk AboutSponsored by American Gem Trade Association
FinancialsAug 13, 2026
Pandora’s ‘Talisman’ Collection Shines, Lab-Grown Diamond Sales FallIn the United States, second-quarter sales were flat amid soft consumer sentiment and lower in-store traffic.
AuctionsAug 13, 2026
This Gold Cadbury ‘Conundrum’ Egg Set a World Auction RecordThe 22-karat gold egg, sold at Batemans Auctioneers in the U.K., was part of a 1980s treasure hunt ad campaign for Cadbury Creme Eggs.
CollectionsAug 13, 2026
John Hardy Infuses ‘Icon,’ ‘Heishi’ Collections with ColorThe expanded collections now feature hand-cut gemstones like topaz, tanzanite, chrysoprase, chalcedony, smoky quartz, and fire opal.
Lab-GrownAug 13, 2026
Jean Dousset Opens Third StoreThe lab-grown diamond jewelry brand’s newest boutique is in Westfield Valley Fair in Santa Clara, California.
SourcingAug 12, 2026
Eshed-Gemstar on the Painstaking Process of Cutting ‘The Legacy Emerald’The gemstone supplier and manufacturer acquired the remarkable 104-gram Zambian emerald at Gemfields’ auction in May.
CrimeAug 12, 2026
Elderly NYC Woman Targeted in Jewelry Swap SchemeTwo suspects offered to trade the woman a “winning” lottery ticket for her jewelry.
