The new location in the Design District pays homage to Miami’s Art Deco heritage and its connection to the ocean.
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

Inflations, tariffs, and politics—including the government shutdown—were among consumers’ top concerns last month.

“Longtime favorite” presenters, as well as first-time speakers, will lead talks and workshops at the annual event in Tucson next year.

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

Silas Smith of Meridian Metalworks won the challenge with his pendant that blends Australian and American landscapes.


Most customers who walk into your store this month have made up their minds. Your job is to validate their choice, Emmanuel Raheb writes.

The collection features characters and motifs from Ukrainian folklore, including an enchanted mirror and a magic egg.

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

MatrixGold 3.11, the newest version of the jewelry design program, offers more flexibility, precision, and creative control.

The pavilion will be part of the 2026 JA New York Spring show, scheduled for March 15 to 17.

Kadet, a 1994 National Jeweler Retailer Hall of Fame inductee, helped grow the family-owned retailer in the Chicago area and beyond.

Billed as the world’s smallest wearable, Lumia Health’s new smart earrings have a health tracker subtly embedded in the back.

Don’t let those with December birthdays feel blue. Help them celebrate their month with blue zircon, turquoise, and tanzanite.

The new pink sapphire version of the piece dances with its wearer in the brand’s “Icons After Dark” holiday campaign.

A choice that’s generated a lot of commentary, Pantone says “Cloud Dancer” marks a fresh start and encourages relaxation and creativity.

The manufacturer’s holiday campaign features a gift guide filled with trending designs and jewelry that can be personalized.

The man was charged with theft, accused of ingesting the necklace while in a jewelry store in Auckland, New Zealand.

The Florida independent expanded its store from 8,000 to 14,000 square feet, fulfilling the vision of its late co-founder, Jim Dunn.

Sponsored by De Beers Group

The classic 5600 series G-Shock has been scaled down to about a tenth of its size, becoming a fully functioning watch ring.

The association’s annual conference and gala will take place Feb. 4, 2026, during the Tucson gem shows.

The January show will include a workshop for jewelry retailers on implementing AI to strengthen their businesses.

Fellow musician Maxx Morando proposed to the star with a chunky, cushion-cut diamond ring designed by Jacquie Aiche.

The retailer, which sells billions in fine jewelry and watches, is suing the Trump administration and U.S. Customs and Border Patrol.

Black Friday is still the most popular shopping day over the five-day holiday weekend, as per the National Retail Federation’s survey.

The historic egg, crafted for Russia's ruling family prior to the revolution, was the star of Christie’s recent auction of works by Fabergé.

The retailer offered more fashion jewelry priced under $1,000, including lab-grown diamond and men’s jewelry.























