The luxury goods company said founder Ippolita Rostagno will remain at the brand’s helm.
19 Hemmerle Pieces From a Private Collection Head to Auction
It will be the largest single-owner collection of the German brand’s jewels to appear at auction, Sotheby’s said.

The auction house will offer what it says is the largest single-owner collection of the German brand’s jewels to appear at auction next month.
Nineteen Hemmerle jewels will appear in “A Vision: Property from the Collection of Michelle Smith” at Sotheby’s New York.
This is seven more than were featured at a 2019 Sotheby’s auction—at the time the largest private collection to go up for sale—where all but one lot exceeded its pre-sale estimate and some went for five times those amounts.
Next month, the jewels will be at the center of the Sotheby’s New York auction comprising 400 lots across two auctions—20th and 21st century design, fine art, jewelry, and handbags from the collection of the late philanthropist and art patron Michelle Smith.
She was the daughter of the late renowned businessman, real estate developer, and philanthropist Robert Smith—who developed large parts of the Crystal City outside of Washington, D.C.—and artist Clarice Smith.
She served as vice president of product design and development for Charles E. Smith Residential Realty and its successor, Archstone-Smith, becoming one of D.C.’s most respected figures, known for her exacting eye, kindness, and championing of various organizations and educational institutions.
Among those she supported are the Foundation for Art and Preservation in Embassies, the Kennedy Center, the Smithsonian Institute, the Aspen Institute, the New York Historical Society, and many others.
Smith died in September.
The Hemmerle pieces in her collection that are heading to auction were gathered over the course of decades, offering a look at the brand’s distinct style, using innovative combinations of colors, textures, and stones.
Highlights include a pair of diamond and copper stud earrings, a bronze and sea urchin necklace, and a peridot, tourmaline, brass, and wood cuff bracelet.
Smith’s jewelry collection also features several pieces from iconic jewelry houses, including a “Ludo Hexagone” bracelet ($60,000-$80,000) and a “Chevalerie” demi-parure ($40,000-$60,000) from Van Cleef & Arpels, and a selection of diamonds and pearls from Graff.
An online sale of jewelry, design and Hermes handbags will complement the live component, running from April 16-27.
Lots will travel to Sotheby’s Paris from March 11-15 before returning to New York for exhibition at Sotheby’s York Ave galleries starting April 16.
The Latest

Laura Burdese, who joined the Italian luxury brand in 2022, will take on the role in July.

The National Jeweler editors revisit the most noteworthy industry happenings and design trends from 2025.

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

The lab-grown diamond grower now offers custom engagement and fashion jewelry through its Kira Custom Lab Jewelry service.


Chandler got his start at Michelson Jewelers and has served as DCA president and CEO since 2001. He will retire at the end of the month.

The boutique is slated to open this week inside Terminal 8, offering pre-owned Rolex watches and more to international travelers.

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

Sponsored by Digital Monitoring Products

The special-edition egg pendant ingested in a New Zealand jewelry store was recovered after a six-day wait.

Associate Editor Natalie Francisco plays favorites with Piece of the Week, selecting a standout piece of jewelry from each month of 2025.

The “Love and Desire” campaign is inspired by the magic that follows when one’s heart leads the way, said the brand.

Two awardees will receive free tuition for an educational course at the Swiss lab, with flights and lodging included.

Berta de Pablos-Barbier will replace Alexander Lacik at the start of January, two months earlier than expected.

Sotheby’s held its first two jewelry sales at the Breuer building last week, and they totaled nearly $44 million.

Winners will receive free registration and lodging for its fourth annual event in Detroit.

Here are six ideas for making more engaging content for Instagram Reels and TikTok, courtesy of Duvall O’Steen and Jen Cullen Williams.

The honorees include a notable jewelry brand, an industry veteran, and an independent retailer.

Carlos Jose Hernandez and Joshua Zuazo were sentenced to life without the possibility of parole in the 2024 murder of Hussein “Sam” Murray.

Yood will serve alongside Eduard Stefanescu, the sustainability manager for C.Hafner, a precious metals refiner in Germany.

The New Orleans jeweler is also hosting pop-up jewelry boutiques in New York City and Dallas.

Set in a Tiffany & Co. necklace, it sold for $4.2 million, the highest price and price per carat paid for a Paraíba tourmaline at auction.

The jeweler’s “Deep Freeze” display showcases its iconic jewelry designs frozen in a vintage icebox.

Take luxury gifting to new heights this holiday season with the jeweler’s showstopping 12-carat sphene ring.

This year's theme is “Unveiling the Depths of the Ocean.”

In its annual report, Pinterest noted an increase in searches for brooches, heirloom jewelry, and ‘80s luxury.

Starting Jan. 1, customers can request the service for opal, peridot, and demantoid garnet.





















