Auctions

A 73-Carat Yellow Diamond Is the Star of Sotheby’s Spring Jewelry Auction

AuctionsJun 01, 2021

A 73-Carat Yellow Diamond Is the Star of Sotheby’s Spring Jewelry Auction

The fancy vivid yellow “Sienna Star” is in a setting from designer Glenn Spiro.

20210601_Sothebys-header.jpg
“The Sienna Star,” a 73-carat fancy vivid yellow diamond in a setting from G by Glenn Spiro (Image courtesy of Sotheby’s)
New York—Sotheby’s New York has dubbed its spring jewelry auction “The Roaring Twenties 2.0” and it is indeed filled with timeless opulence. 
 
The biggest “Magnificent Jewels” sale draw is a design from G by Glenn Spiro. 
 
“The Sienna Star” is a 73.11-carat fancy vivid yellow, cut-cornered square step-cut diamond, estimated to sell for as much as $3 million, the auction house said. Spiro’s setting features round pavé diamonds and a flexible shank.
 
Ahead of the June 9 live auction, bidders can submit their maximum bids online for any of the sale’s 94 lots. The Sienna Star’s starting bid is $2.2. million.

20210601_Sothebys-1.jpg
Multiple views of “The Sienna Star” (Image courtesy of Sotheby’s)
 
Also on the agenda is a “Distinguished Private Collection” comprising six lots that are being auctioned to benefit a charitable foundation. 
 
In all, they are estimated to sell for $13 million.

 Related stories will be right here …  
Among them is a Harry Winston Colombian emerald and diamond necklace estimated to garner between $1.5 million and $2.5 million; a 13.02-carat Burmese ruby ring mounted by Carvin French expected to earn between $1 million and $2 million; and a necklace by Andrew Clunn set with 28 graduated oval-shaped diamonds weighing more than 168 carats, estimated to sell for $2 million to $3 million. 
 
SEE: A Distinguished Private Collection Being Auctioned for Charity

The mini-collection is rounded out by a 23.59-carat, D-color, internally flawless Type IIa diamond ring expected to sell for between $1.8 million and $2.8 million, and a pair of D-color diamond pendants weighing 27.01 carats and 29.84 carats, estimated to sell for between $1 million and $1.5 million, and $1.2 million and $1.8 million, respectively. 
 
The spring Magnificent Jewels sale dazzles with colorful gems and diamonds. 
 
There’s a Bulgari 25.29-carat Kashmir sapphire ring with bullet diamond side stones, estimated to sell for $2 million-$3 million, as well as a 168.18-carat Ceylon sapphire and diamond necklace expected to fetch between $1.5 million and $2.5 million.
 
Magnificent Jewels Springtime Color

A Bulgari 9.27-carat Colombian emerald and diamond ring is expected to garner $500,000-$700,000, and a 3.75-carat, VVS1 fancy intense pink diamond and diamond ring should earn between $1.5 million and $2.5 million.
 
The sale also features a notable array of signed jewels from houses like Van Cleef & Arpels, including several splashy mystery-set jewels and a version of the zipper necklace that transforms into a bracelet.

20210601_Sothebys-11.jpg
This Van Cleef & Arpels zipper bracelet in the “Zip Antique Udaipur” style, which also transforms into a necklace, is expected to fetch between $250,000 and $350,000.

The full sale can be previewed online or at Sotheby’s New York from June 4-8, with the live auction taking place June 9.
 
Immediately following the sale, online bidding will open for a single-lot auction of a 50.03-carat, G-color round diamond,  which will be offered without reserve.

The Latest

Rolex Miami store
WatchesDec 10, 2025
There’s A New Rolex Boutique in Miami

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

Stock image of consumers shopping in the winter
SurveysDec 10, 2025
Consumer Confidence Drops in November

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

National Association of Jewelry Appraisers logo
SourcingDec 10, 2025
NAJA Announces Details for 2026 ‘Ace It’ Winter Conference

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

Recipients Collage 2025 - NJ (1872 x 1050 px) (1872 x 1052 px).png
Brought to you by
Impacting Tomorrow Today

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

Silas Smith and his Responsible Design Challenge Winning Pendant
Events & AwardsDec 10, 2025
MJSA Names 2025 Responsible Design Challenge Winner

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

Weekly QuizDec 04, 2025
This Week’s Quiz
Test your jewelry news knowledge by answering these questions.
Take the Quiz
National Jeweler columnist and Smart Age Solutions CEO Emmanuel Raheb
ColumnistsDec 09, 2025
Holiday Sales Happen in December, Most Decisions Don’t

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

Guzema Once Upon a Time Collection Campaign
TrendsDec 09, 2025
‘Once Upon a Time,’ Guzema Debuted Its Holiday Collection

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

roseco-catalog.png
Brought to you by
Roseco Releases New Full-Line Catalog

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

Gemvision by Stuller MatrixGold 3.11
TechnologyDec 09, 2025
Gemvision Releases Updated MatrixGold

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

Sign at the JA New York jewelry trade show
Events & AwardsDec 09, 2025
MJSA Showcase Pavilion Returning to JA New York

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

Juell Kadet, former executive vice president of Rogers & Hollands
MajorsDec 08, 2025
Juell Kadet, a ‘Lifelong Pillar’ of Rogers & Hollands, Dies at 96

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

Lumia 2 smart earrings
TechnologyDec 08, 2025
You’ve Heard of Smart Watches and Rings; Meet Smart Earrings

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

Lionheart Wildflower Double Cocktail Ring
TrendsDec 08, 2025
Amanda’s Style File: Celebrating December’s Birthstones

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

Robinson Pelham Tsar Star Earrings in Blaze
CollectionsDec 05, 2025
Piece of the Week: Robinson Pelham’s ‘Tsar Star’ Earrings

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

Pantone 11-4201 Cloud Dancer
TrendsDec 05, 2025
Pantone’s Color of the Year for 2026 Is … White

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

Stuller holiday 2025
MajorsDec 05, 2025
Stuller Releases ‘Wrapped in Wonder’ Campaign

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

Fabergé x 007 Octopussy egg and pendant
CrimeDec 04, 2025
Man Arrested After Allegedly Swallowing Fabergé Egg Pendant

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

Exterior of renovated and expanded J.R. Dunn Jewelers
IndependentsDec 04, 2025
Step Inside JR Dunn Jewelers’ Giant New Store

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

DD-Email-Image-1872x1052 (1).jpg
Supplier BulletinDec 04, 2025
Introducing Shop Natural Day: A New Movement Celebrating Natural Diamonds

Sponsored by De Beers Group

G-Shock DWN5600 Ring
WatchesDec 04, 2025
Casio Shrinks its G-Shock Watch

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

Accredited Gemologists Association logo
Events & AwardsDec 04, 2025
AGA Announces 2026 Tucson Speaker Lineup

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

 CBG logo
Events & AwardsDec 04, 2025
CBG Announces Speaker Lineup for 2026 Miami Event

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

Miley Cyrus and Maxx Morando Engagement Ring
TrendsDec 03, 2025
Miley Cyrus Debuts Edgy Engagement Ring

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

Costco store
Policies & IssuesDec 03, 2025
Costco Joins Growing Wave of Retailers Suing for Tariff Refunds

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

Shoppers in a mall
SurveysDec 03, 2025
A Record 202.9M Shoppers Turned Out Thanksgiving Weekend

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

Faberge The Winter Egg
AuctionsDec 03, 2025
Fabergé’s 'The Winter Egg' Achieves Record $30M

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.

Vera Wang Love lab grown diamond engagement ring
FinancialsDec 02, 2025
Signet Jewelers’ Q3 Sales Up Amid Continued Focus on Lower Price Points

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

×

This site uses cookies to give you the best online experience. By continuing to use & browse this site, we assume you agree to our Privacy Policy