The “River of Heaven” necklace, our Piece of the Week debuting at Couture, combines 26 salt and pepper diamonds spaced by Tahitian pearls.
Buyers Went Crazy for Hester Diamond’s Mineral Collection
Every lot was sold at the Sotheby’s auction, with 98 percent topping their highest pre-sale estimates.

Diamond was a prominent New York interior designer and philanthropist (and mother of Beastie Boy “Mike D”).
She got her start at an antiques gallery before she and her first husband, Harold, became enmeshed in the fine art world and built up quite a collection of their own.
After Harold’s death, Hester began to sell of much of the modern art she had collected to focus on the Old Masters, a passion that blossomed with her second husband, Ralph Kaminsky.
She was also interested in minerals, collecting specimens with aesthetics that appealed to her, and interior design.
Her passion for interior design was reflected in the way she displayed everything in her home, contrasting Old Masters with contemporary furniture and displaying her minerals on colorful, custom-made shelves.
Diamond died in January 2020 at the age of 91.
Last week, her art collection and her mineral collection went up for sale in a single-owner auction at Sotheby’s.
The auction house confirmed to National Jeweler that all 126 minerals featured in “Fearless: The Collection of Hester Diamond Part II” sold.
The mineral collection totaled $1.5 million, more than tripling its highest estimate of $358,450. Sotheby’s said 98 percent of the auction’s lots sold for more than expected.
The top lot was a Colombian emerald specimen from the Coscuez mine in Boyacá (seen at the top of the article).
It was estimated to sell for between $3000 and $5,000, but ended up garnering $81,900 at the auction.
An azurite with malachite from the Bisbee Mine in Arizona, sold for $52,920, compared with a pre-sale high of $12,000; an anhydrite from Mexico garnered $50,400, compared with a $600-$800 pre-sale range; and a rhodochrosite from the storied Sweet Home Mine in Colorado estimated to sell for $8,000-$12,000 ended up going for $44,100.
A pyrite specimen from Spain, for example, had 16 bidders going after it, and 16 were also going for a hemimorphite specimen from China, while 15 chased after quartz from Arkansas.
Visit Sothebys.com to see all results.
The top lot was a rare sculpture by Gian Lorenzo Bernini and his father, called “Autumn,” which sold for $8.9 million.
The Latest

This year’s inductees include second-, third-, and fourth-generation jewelers.

The author, speaker, and entrepreneur will give his presentation, “Spiritual Billionaire,” on Saturday morning.

As gold prices rise, today’s retailers are looking for alternatives at prices that will appeal to wider audiences.

Three-time Grammy award-winning artist Nelly is set to perform at the annual event at Tao Beach on Sunday night.


Signet will integrate the online-only, natural diamond-focused jeweler into Blue Nile, which it wants to position as a higher-end retailer.

These up-and-coming jewelry brands are bringing their distinct aesthetic and unique point-of-view to the Design Atelier for the first time.

With the trade and customer trust in mind, GIA® developed NextGem™ – on-demand training designed specifically for retail.

The lab’s proprietary diamond cut grade has been expanded to include the popular fancy shape.

This year, it’s what could happen outside of show hours that worries JSA Executive Vice President Scott Guginsky.

High-end fashion houses know how to emotionally connect with customers online. Retail jewelers should take note, Emmanuel Raheb writes.

The designers are the third cohort of mentees from the show’s Belonging @ Couture mentorship program.

Buying discipline at trade shows starts with clarity about your inventory levels, Smith writes.

The trade show’s education series returns, with sessions on retail trends, AI, watches, marketing, corporate responsibility, and more.

The Curated Designer Project has expanded to highlight eight independent jewelry designers during CBG’s Las Vegas show.

Bring a cool tone to your summer jewelry with these white metal pieces.

The deal closed this week, which means Instore will produce the JA NY show slated to take place this fall.

The company’s jewelry sales were up in Q4 and the fiscal year, with Richemont raising prices in part because of the cost of gold.

The “Bauble” capsule collection of colorful one-of-a-kinds includes our Piece of the Week, the “Bauble” earrings, featuring rose zircon.

The updated catalog has a newly dedicated section for gift wrapping.

Everett covers colored stones’ surging popularity, the mellow return of the “Mellon Blue,” and his “The Devil Wears Prada” doppelgänger.

Fourth-generation CEO Lilly Mullen wants to emphasize experience, connection, and personalized service.

The new award, created in partnership with Henne Jewelers, honors the late designer’s legacy through supporting jewelry education.

The addition of the diamond-producing countries as nation affiliated members broadens the federation’s global representation, WFDB said.

The NYPD is warning elderly New Yorkers to keep their jewelry hidden when walking outside to avoid being a target.

Designer Viviana Langhoff has realized her dream of owning a space for her Chicago jewelry store that looks and feels like her brand.

The sessions will run from Friday, May 29, to Sunday, May 31, with one being a live taping of an episode of Couture’s podcast.


























