Piece of the Week: Jemma Wynne’s Trillion Tubogas
The statement piece is perfect for a bold holiday look.

Jemma Wynne makes the case for a single, center-of-attention statement piece with its new tubogas collar, National Jeweler’s “Piece of the Week” this week.
There’s no need to pile on a mountain of necklaces with a jewel this dramatic.
Rather, the company’s latest creation is the kind of accessory one chooses first for an elegant soiree, crafting their entire ensemble around it.
An elegant suit’s plunging neckline or an off-the-shoulder gown’s bare shoulder canvas would make the perfect backdrop for the tubogas at a dressed-up holiday affair.
The 18-karat gold tubogas—or hollow necklace in which gold strips have been wrapped together to form a chain—is adorned with an 18-karat gold medallion pendant featuring a 1.5-carat D-color trillion-cut diamond set in a diamond halo with rhodium detailing.
Diamonds and rhodium also adorn the bale.
Priced at $50,500, the one-of-a-kind jewel is available through the Jemma Wynne website.
The Latest

Linda Coutu is rejoining the precious metals provider as its director of sales.

The Signet Jewelers-owned store, which turned 100 last year, calls its new concept stores “The Edit.”

The supplier has a curated list of must-have tools for jewelers doing in-house custom work this year.

How Jewelers of America’s 20 Under 40 are leading to ensure a brighter future for the jewelry industry.

Footage of a fight breaking out in the NYC Diamond District was viewed millions of times on Instagram and Facebook.


The governing board welcomed two new members, Claire Scragg and Susan Eisen.

The master jeweler, Olympian, former senator, and Korean War veteran founded the brand Nighthorse Jewelry.

Roseco’s 704-page catalog showcases new lab-grown diamonds, findings, tools & more—available in print or interactive digital editions.

Executive Chairman Richard Baker will take over the role as rumors swirl that a bankruptcy filing is imminent for the troubled retailer.

Mohr had just retired in June after more than two decades as Couture’s retailer liaison.

Shekhar Shah of Real Gems Inc. will serve as president of the Indian Diamond & Colorstone Association in 2026.

This year’s good luck charm features the mythical horse Pegasus, and is our first Piece of the Week of the new year.

Articles about crime, engagement rings, and a necklace worn in the World Series generated the most interest among readers.

As part of the leadership transition, Sherry Smith will take on the role of vice president of coaching strategy and development.

It marks the third time the country has headed the Kimberley Process. Ghana will serve as vice chair.

The new Bulova x Stetson designs highlight two animals often associated with the American West—the bison and the Texas Longhorn.

Its residency at Yamron Jewelers will run through May 2026.

From influential executives to innovative designers, we pay tribute to the people we said goodbye to this year.

The retailer is expanding into areas with large Indian and South Asian populations.

The Italian brand has opened its first flagship amid the peaks of the Dolomites in Madonna di Campiglio, Italy.

The new curation at the Natural History Museum of Los Angeles County showcases rare gem and mineral specimens in their uncut, natural state.

The couple pleaded guilty to concealing at least $127 million in cash transactions at its precious metals businesses.

Consumers shared concerns about prices, inflation, tariffs, trade, and politics in the survey’s write-in response section.

In February 2026, the auction house will move its headquarters to the former Steinway Hall, a neoclassical landmark on Billionaires’ Row.

The new show will take place Jan. 23-25, 2026.

The former BHP Billiton leader and Gemfields chairman is remembered for his influential leadership throughout his 50-year mining career.

The LVMH-owned brand has partnered with the costume design union to revamp its award for 2026.






















