Piece of the Week: A Gray Diamond Delight from Hemmerle
This 10.67-carat diamond, graded a natural fancy gray by two major labs, was part of Sotheby’s “Magnificent Jewels” sale last week.

One covered the sale of an emerald retrieved from the 1622 wreck of the Nuestra Señora de Atocha and made into a ring for Mitzi Perdue (of Perdue Farms fame), while the other delved into the fate of some of the sale’s top diamonds.
It was a crowded and, well, magnificent field, making it tough to stand out, unless you are a jewel from divine German design house Hemmerle.
Headed by fourth-generation jewelers Christian Hemmerle and wife Yasmin Hemmerle, the brand is considered one of the top contemporary labels among collectors.
A 19-piece, single-owner collection of Hemmerle jewels went up for auction last year at Sotheby’s and sold for a total of $1.4 million, nearly double its pre-sale estimate.
The Hemmerle piece highlighted here features a 10.67-carat emerald-cut gray diamond of SI1 clarity from an “important Detroit collection.”
Mounted in 18-karat gold, the diamond is graded “fancy gray, natural color” by both the Gemological Institute of America and Gübelin Gem Lab.
An anonymous buyer paid $1.1 million ($103,918 per carat) for the piece at Magnificent Jewels, below the pre-sale estimate of $1.5 million-$2 million.
We personally would have paid more, if we had the money.
The Latest

Emmanuel Raheb discusses the rise of “GEO” and the importance of having well-written, quality content on your website.

Each received around four years for burglarizing a jewelry store and a coffee shop in Simi Valley, California, last May.

Catherine Aulick, a GIA graduate, received the ninth and final Gianmaria Buccellati Foundation Award for Excellence in Jewelry Design.

Every jeweler faces the same challenge: helping customers protect what they love. Here’s the solution designed for today’s jewelry business.

We asked a jewelry historian, designer, bridal director, and wedding expert what’s trending in engagement rings. Here’s what they said.


Experts from India weigh in the politics, policies, and market dynamics for diamantaires to monitor in 2026 and beyond.

Beth Gerstein discusses the vibe of the new store, what customers want when fine jewelry shopping today, and the details of “Date Night.”

With refreshed branding, a new website, updated courses, and a pathway for growth, DCA is dedicated to supporting retail staff development.

Are arm bands poised to make a comeback? Has red-carpet jewelry become boring? Find out on the second episode of the “My Next Question” podcast.

The Swiss watchmaker is battling declining sales amid a rapid retail expansion, according to a Financial Times report.

The campaign celebrates Giustina Pavanello Rahaminov, the co-founder’s wife and matriarch of the family-owned brand, for her 88th birthday.

Rachel Bennett, a senior jeweler who has been with Borsheims since 2004, earned the award.

After the Supreme Court struck down the IEEPA tariffs, President Trump imposed a 10 percent tax on almost all imports via a different law.

The industry veteran, who was with The Edge Retail Academy for 14 years, joins her husband at the company he founded in 2022.

The vintage signed jewelry retailer chose Miami due to growing client demand in the city and the greater Latin American region.

Former Flight Club executive Jin Lee will bring his experience from the sneaker world to the pre-owned watch marketplace.

Sakamoto, who died in mid-January following a sudden illness, is remembered for his humility and his masterful, architectural designs.

The April event will feature a new VIP shopping day requiring a special ticket.

Bulgari chose the British-Albanian singer-songwriter for her powerful and enduring voice in contemporary culture, the jeweler said.

In a 6-3 ruling, the court said the president exceeded his authority when imposing sweeping tariffs under IEEPA.

Smith encourages salespeople to ask customers questions that elicit the release of oxytocin, the brain’s “feel-good” chemical.

JVC also announced the election of five new board members.

The brooch, our Piece of the Week, shows the chromatic spectrum through a holographic coating on rock crystal.

Raised in an orphanage, Bailey was 18 when she met her husband, Clyde. They opened their North Carolina jewelry store in 1948.

Material Good is celebrating its 10th anniversary as it opens its new store in the Back Bay neighborhood of Boston.

The show will be held March 26-30 at the Miami Beach Convention Center.

It will lead distribution in North America for Graziella Braccialini's new gold pieces, which it said are 50 percent lighter.


























