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

Charlotte Rose said her election is “a sign that this is an industry capable of change.”

Sponsored by Rio Grande Jewelry Supply

The artwork celebrates the Atlanta jeweler’s legacy and symbolizes its commitment to supporting local artists and its community.

Colored gemstones, artisan finishes, mixed metals, and meaningful details are shaping demand in bridal jewelry.

Its team can evaluate jewelry and watches, as well as luxury handbags, artwork, and collectibles.


Falling oil prices were a factor in the slight month-over-month improvement.

The new offering comprises more than 120 bridal and engagement ring styles with natural and lab-grown diamonds.

DCA is preparing the next generation of professionals by supporting workforce development, leadership growth, and career advancement.

The clock is part of the celebration for the soon-to-open Rolex headquarters on New York City’s Fifth Avenue.

The public relations professional is remembered for her benevolent generosity and unwavering commitment to those around her.

The new watch commemorates Pokémon’s 30th anniversary.

The luxury retailer is now called Exemplar Luxury Group.

The “Lady” collection is a new take on old beauty standards with gemstone-adorned hair pins and combs, a compact mirror necklace, and more.

The new line is included in the e-tailer’s curation of jewelry celebrating America’s 250th anniversary.

All active members who earned their credential or designation before Dec. 1, 2025, are required to recertify.

The new jewelry collection uses a colorful palette of onyx, malachite, tiger’s eye, mother-of-pearl, lapis, turquoise, and coral.

Lee Michaels Fine Jewelry is celebrating 30 years in the Ridgeland, Mississippi community.

Sean Milliner has joined the company.

Classes will begin in August at GIA’s new Canary Wharf location.

A ring set with “hogback” diamonds, an early stone cut dating to around the 16th century, sold for more than $20,000 at a U.K. auction.

The rainbow version of the ring, our Piece of the Week, features angel-cut, octahedral lab-grown sapphires designed to be worn as armor.

The new initiative donates a portion of the proceeds from select charms to charitable causes.

Dallow will lead the International Colored Gemstone Association, effective July 6.

Senior Editor Lenore Fedow headed to Savannah to learn more about the 10-year, $10 million partnership between JM and the art school.

Its new capsule jewelry collection features gold-finished stainless steel pieces designed for a maximalist look without a luxury price tag.

The week-long event in Geneva is slated for April 2027.

The three industry leaders bring financial, communications, and legal expertise to the nonprofit’s board of directors.























