A matching pair of 18.38-carat, D-color diamonds from Botswana’s Jwaneng mine sold for $3.3 million, the top lot of the jewelry auction.
New Diamond Foundry Facility To Be Fully Operational by 2020
It is the second production facility for the lab-grown diamond company and is located in Washington state.

Washington—Diamond Foundry is one step closer to the grand opening of its second facility after inking a power supply contract last week.
The San Francisco-based lab-grown diamond company first announced plans for a new “MegaCarat” foundry in Wenatchee, a city in north-central Chelan County in Washington state, on its blog in September 2017.
Known locally as the “Apple Capital of the World,” the Diamond Foundry will have its facility there on three acres in an old packaging plant leased to the company by fifth-generation apple farmers Stemlit Growers.
A Diamond Foundry spokesperson confirmed to National Jeweler Tuesday that production already has begun at the Washington facility but said the recently approved additional hydropower will enable the company to expand.
Last week, Public Utility District commissioners for Chelan County, the county where Wenatchee is located, approved a 10-year power contract with Diamond Foundry, providing up to 19 megawatts of power to the company.
Growing diamonds in a lab is power-intensive, and currently the area doesn’t have the capacity to supply that much power to the plant, so Stemilt Growers has agreed to build a substation, according to the PUD.
PUD officials noted that a substation typically takes 18 months to finish but said the project would be fast-tracked for completion by March 2020.
The facility is expected to be fully operational by then and will bring between 35 and 50 jobs to the Wenatchee area.
Diamond Foundry noted the city’s proximity to a source of hydropower, as it sits at the confluence of the Columbia and Wenatchee rivers.
“The partnership with Chelan P.U.D. and Stemilt has been seamless, and we are looking forward to continuing the Diamond Foundry mission of growing diamonds with net-zero carbon footprint,” Production President Kyle Gazay said in a statement.
Diamond Foundry is certified as carbon neutral by Natural Capital Partners, a London-based environmental consultancy group, meaning it was found to achieve net-zero greenhouse gas emissions.
The Latest

Sponsored by A Diamond Is Forever

It was the second auction appearance for the fancy vivid blue-green diamond, which sold for $7.8 million at Christie’s Geneva 12 years ago.

With the trade and customer trust in mind, GIA® developed NextGem™ – on-demand training designed specifically for retail.

Members of the U.S. Marshals Task Force took a 22-year-old man into custody. He was charged with tampering with evidence.


While the overall number of crimes was down, there were more incidences in which robbers pulled out guns, mace, or rammed cars into stores.

Jack Sutton Fine Jewelry is closing its store inside the downtown shopping center after 40 years in business.

Gain access to the most exclusive and coveted antique pieces from trusted dealers during Las Vegas Jewelry Week.

The price of gold has risen, affecting the number of pieces designers make, the materials they use, and how they position themselves.

Peter Smith gives tips on leading meetings, developing marketing, and making trade show appointments in the age of short attention spans.

The 11-piece “Medallions” capsule collection features five motifs: a crying eye, a heart on fire, a spiral, a flower, and a swallow.

From Gen Z’s view of luxury to “doom spending,” these are the six consumer trends to note this year.

The partners have announced the second cycle of the program, which has expanded to include a $25,000 student scholarship.

The owners of Staats Jewelers are heading into retirement.

Jeffrey Gennette, who retired in 2024 after 41 years with Macy’s, is the newest member of the jewelry retailer’s board of directors.

May babies are lucky to have emeralds, a gemstone admired for centuries, as their birthstone, writes Amanda Gizzi.

The new module allows retailers to plan, promote, and measure the success of events from a single dashboard.

NDC said in an open letter that Pandora’s statements about the carbon footprint of lab grown versus natural diamonds are inaccurate.

The diamantaire and industry leader succeeds Feriel Zerouki and said he will focus on being a “champion” for natural diamonds.

She wore our Piece of the Week, Glenn Spiro’s “Old Moghul Golconda” earrings, featuring fancy brown-yellow diamonds totaling 51.90 carats.

Two pieces were named “Best in Show,” one from the retail category and one from the supplier category.

The jewelry retailer noted resilience among its higher-end customers while demand softened for its lower-priced offerings.

Led by the 6.59-carat sapphire, the sale garnered $9.7 million, a record total for a Heritage jewelry auction.

In his new role, sales specialist Billy Welshoff will focus on the eastern United States.

José Gaztelu has been promoted to the role, which has been vacant since last year.

It has also opened the application period for the Seymour & Evelyn Holtzman Bench Scholarship through June 30.

The owner of the Ekati mine, which opened in 1998, has filed for insolvency protection amid the significant decline in diamond prices.























