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

The stone’s two zones, one pink and one colorless, may have formed at two different times, the lab said.

Hollywood glamour meets Milanese sophistication in the design of Pomellato’s new store in Beverly Hills, California.

The New York City store showcases a chandelier with 1,500 carats of lab-grown diamonds designed by an FIT student.

You deserve to know what you are selling–to protect your customers as well as your business and your reputation.

The Museum of Arts and Design's new exhibition features 75 pieces by the designer, best known for her work in the “Black Panther” films.


Making its auction debut, "The Glowing Rose" is expected to fetch $20 million at the November jewelry sale in Geneva.

They were attacked on Oct. 15, as approximately 40 miners without licenses marched on the mine’s gate.

The upcoming show provides savvy retailers with the opportunity to stock their cases with best sellers in advance of the holiday season.

It took the masked thieves less than 10 minutes to steal eight irreplaceable jewels from two display cases in the museum’s Apollo Gallery.

Gemologist Lauren Gayda has previously worked at The Clear Cut, Taylor & Hart, and Effy Jewelry.

In 2026, the jewelry retailer will celebrate a milestone only a small percentage of family-owned businesses survive to see.

The new showcase dedicated to Italian jewelry design is set for Oct. 29-30.

Jeffrey Zimmer's decades of leadership at Reeds Jewelers are defined by integrity, a love of sourcing gemstones, and a heart for community.

The new high jewelry design and production process takes 30 days or less from concept to completion, the auction house said.

The holiday catalog for 2025 features never-before-seen images of more than 100 one-of-a-kind masterpieces.

The brand has released a second installment of its collection of traditional and non-traditional commitment heirlooms.

Corey rescued New England chain Day’s Jewelers, preserving its legacy with strong people skills, pragmatism, and a “get-it-done” attitude.

Charles Robinson Shay was sentenced to life in prison plus 120 years while his accomplice, Michael James McCormack, got 75 years.

Timepieces at Luxury will take place at The Venetian and, like Luxury, will be invitation-only for the first two days.

The auction house named a new global head of jewelry, as well as a new head of the jewelry department for the Americas.

As chairman of Schwanke-Kasten Jewelers, Tom Dixon has been tasked with honoring the past and shaping the future of the family-run store.

Katty Villapando Lyte and Mica Rencher received a $10,000 grant for their business, Shimmer Culture LLC.

The parents of the Dallas Mavericks rookie bought their engagement ring at a Day’s store in Bangor, Maine, in 1997.

The UK-based brand sourced the gemstones, which are fully traceable, from an artisanal mining community in Tanzania.

The trio of Advent calendars include a version with 18-karat gold and lab-grown diamond jewelry in a red lacquer jewelry box.

Created in collaboration with Nymphenburg Porcelain, the lock is part of a four-piece collection that took two years to bring to fruition.

Jewelry industry veteran Alisa Bunger has taken on the role.