Peter Damian Arguello, a jeweler in the Denver suburb of Wheat Ridge, was found dead inside his store in November 2023.
Consumers Saw Lightbox. Here’s What They Wanted to Know
At a pop-up shop in New York, De Beers is giving the public the chance to see its lab-grown line in person for the first time.

New York—De Beers used to spread the message that “A Diamond Is Forever” around Grand Central Station at holiday time, appealing to the 750,000+ commuters crisscrossing the classic transit hub every day.
This year, the diamond miner and marketer is at it again, but now its promoting lab-grown diamonds at the Oculus, the two-year-old, ultra-modern transit hub at the site of the rebuilt World Trade Center.
Call it a sign of the times.
Back in September De Beers launched Lightbox, a line of moderately priced (the most expensive pieces on the site, 1-carat diamonds set in 10-karat gold, are $1,000) fashion jewelry set with man-made diamonds grown by its Element Six arm in the United Kingdom.
The line is fairly limited at this point—just blue, pink and white lab-grown diamonds set in either pendants or earrings, with blue and pink studs the runaway successes so far, said Lightbox Head of Marketing Sally Morrison.
It is sold online only, which means consumers haven’t had a chance to see, touch and feel it—until this week.
On Monday, Lightbox opened a pop-up shop at the Oculus, and this editor popped by Tuesday afternoon around 3:30, shortly before evening rush hour was in full effect, and lingered until a little after 5.
What became apparent in that time is this: Consumers are drawn in when they see something sparkly.
There was a constant stream of people in and out of the 20’ x 20’ structure the entire time.
But they don’t know as much about lab-grown diamonds as many in the trade might think, and there is confusion about how man-made diamonds differ from simulants.
“I’m intrigued. I’ve never heard of this before,” one woman wearing natural diamond stud earrings said as she entered the Lightbox space.
After the product and pricing was explained to her—it starts at $200 for a quarter carat and goes up to $800 for 1 carat, plus the cost of the setting—she seemed to like the idea, noting that lab-grown diamonds are “an accessible way to be able to give people a diamond.”
Multiple customers asked about the difference between lab-grown diamonds and CZ, and between the stones and another diamond simulant, moissanite, echoing the comments consumers made when National Jeweler conducted an informal poll on lab-grown diamonds four years ago.
There were also a lot of questions about how the quality of lab-grown diamonds compare
“There’s a lot of education to do, not just about our product but the category in general,” Morrison said Tuesday afternoon in an interview at the Lightbox booth. “There’s a lot of confusion.”

Morrison and her team—many of whom were clad in on-brand blue and pink sweaters—are learning that first-hand while manning the pop-up, which is set to remain open through Sunday.
Like the Blue Nile “webrooms,” the Lightbox pop-up is not selling the product it’s showing; customers cannot walk out with a little box of jewelry in their hands.
They can, however, order jewelry from an iPad set up in the left-front corner of the pop-up, or shop on the brand’s website after they leave.

De Beers announced just before the Las Vegas jewelry trade shows it would begin selling lab-grown diamonds, sparking a flurry of commentary in the industry.
Some applauded the move, claiming that the current crop of companies selling man-made diamonds are overcharging and De Beers’ pricing model would serve as a regulator.
Some existing sellers of lab-grown diamonds accused De Beers of predatory pricing, while retailers worried how Lightbox would impact sales of lower-end diamond fashion jewelry in their stores and bemoaned the addition of another supplier selling direct to the public.
RELATED CONTENT: Is De Beers’ Lab-Grown Line a Fit for Signet?The company has said it will make Lightbox available to brick-and-mortar jewelers in the future.
Morrison said Tuesday a brick-and-mortar test run is planned for 2019, though De Beers has not yet decided which retailers will carry the line.
In the meantime, the man-made diamonds continue to move online and Morrison is not ruling out the possibility of another pop-up.
She said that selling online and having this physical space is teaching them a lot about what consumers do, and don’t, like about the product.
“I think it’ll be better to go into brick-and-mortar (stores) when we know more about the customer and the response to the product,” she said.
The Latest

The retailer, owned by Berkshire Hathaway, is becoming part of the Berkshire Hathaway Jewelry Group with Helzberg.

The Continental Buying Group’s 2025 Tampa Experience Show is slated for Sept. 8-10.

As a leading global jewelry supplier, Rio Grande is rapidly expanding and developing new solutions to meet the needs of jewelers worldwide.

Associate Editor Lauren McLemore recently attended a fabrics trade show where a trend forecaster shared her predictions for summer 2027.


The company raised its full-year sales guidance while noting it has not yet assessed the potential impact of the latest tariff news.

The organization has raised more than $1.3 million for charity since its inception.

The Seymour & Evelyn Holtzman Bench Scholarship from Jewelers of America returns for a second year.

The brand’s latest iteration of a bezel-set diamond bangle features clean lines and a timeless design for a new modern silhouette.

The first watch in the series commemorates his participation in the Civil Rights movement, marching from Selma to Montgomery in 1965.

The catalog contains a complete listing of all the loose gemstones in stock, as well as information about the properties of each stone.

The company added a retailer dashboard to its site and three new birds to its charm collection, the cardinal, blue jay, and hummingbird.

An additional 25 percent tariff has been added to the previously announced 25 percent.

Its Springfield, Massachusetts, store is set to close as owner Andrew Smith heads into retirement.

Designer Hiba Husayni looked to the whale’s melon shaped-head, blowhole, and fluke for her new chunky gold offerings.

She will present the 23rd edition of the trend forecasting book at Vicenzaoro on Sept. 7.

Omar Roy, 72, was arrested in connection with the murder of jeweler Dionisio Carlos Valladares.

The New Orleans-based brand’s “Beyond Katrina” jewels honor the communities affected by the storm.

Lilian Raji explains why joining an affiliate network is essential for brands seeking placements in U.S. consumer publications.

The organization has awarded a total of $42,000 through its scholarship programs this year.

The winner of the inaugural David Yurman Gem Awards Grant will be announced live at the 2026 Gem Awards gala.

As summer winds down, celebrate the sunny disposition of the month’s birthstones: peridot and spinel.

Moshe Haimoff, a social media personality and 47th Street retailer, was robbed of $559,000 worth of jewelry by men in construction outfits.

The addition of Yoakum, who will lead Kay and Peoples, was one of three executive appointments Signet announced Thursday.

The insurance company’s previous president and CEO, Scott Murphy, has split his role and will continue as CEO.

The nearly six-month pause of operations at its Kagem emerald mine earlier this year impacted the miner’s first-half results.

The necklace uses spinel drops to immortalize the moment Aphrodite’s tears mixed with her lover Adonis’ blood after he was fatally wounded.