Auctions

Sotheby’s Selling 100-Carat Round Brilliant for Over $33M

AuctionsFeb 09, 2018

Sotheby’s Selling 100-Carat Round Brilliant for Over $33M

The D color, flawless diamond is available through private sale at the Sotheby’s Diamonds retail store in London.

20180209_Sothebys1.jpg
Sotheby’s told National Jeweler that the asking price for this 102.34-carat diamond is “considerably higher” than the amount garnered by Christie’s “The Art of De Grisogono, Creation I,” which sold for $33.7 million last year.

London--On the occasion of the first anniversary of the opening of Sotheby’s Diamonds, the auction house’s retail boutique on New Bond Street, Sotheby’s is unveiling a very rare diamond for sale.

It’s offering a 102.34-carat, Type IIa, D color, flawless, round brilliant diamond.

Sotheby’s said the GIA-graded stone is the largest round, D color, flawless diamond on record, and the only round brilliant over 100 carats with perfect color and clarity.

The auction house displayed the stone to the public Feb. 8 and 9 at the New Bond Street salon.

De Beers mined the original rough diamond, which weighed 425 carats, in Botswana about two years ago, then Diacore cut and polished the stone in Johannesburg and New York over a period of six months.

Though Sotheby’s isn’t publicly disclosing the exact asking price, a spokesperson for the auction house told National Jeweler it expects the diamond to sell for more than any of the seven diamonds over 100 carats sold at auction, of which Sotheby’s sold five.


Each of the seven loose diamonds over 100 carats that have been offered at auction were fancy-shaped stones. This stone set for sale at Sotheby’s retail store in London is the largest Type IIa, D color, flawless, round brilliant-cut diamond over 100 carats on record.

The most expensive of those stones was a 118.28-carat D color, flawless, Type IIa oval diamond that sold for $30.8 million, or $260,252 per carat, at Sotheby’s Hong Kong in October 2013. It currently holds the price-per-carat record for a colorless diamond at auction.

Sotheby’s said that the round will not only beat that price per carat, but also top the highest price paid for any diamond jewelry at auction, which stands at $33.7 million for De Grisogono’s “The Art of De Grisogono, Creation I,” auctioned at Christie’s last November. That necklace featured a 163.41-carat emerald-cut stone.

The asking price for this stone is “considerably higher,” Sotheby’s said.

Patti Wong, founder and chairman of Sotheby’s Diamonds, said: “This stone is over 100 carats of flawless perfection. In the course of my long career, which has brought me close to some of the greatest stones the earth has ever yielded, I have not encountered anything quite like this.

“With its outstanding weight, its perfect color, clarity and cut, it is a masterpiece of nature brought to life by human hand, blazing with a brilliant
firework-like display of almost every color on the spectrum—mesmerizing to behold. It is a huge privilege to mark the first anniversary of our London salon with the exhibition of such a superlative stone.”

Sotheby’s operates two other Sotheby’s Diamonds retail locations, one in New York and one in Hong Kong.
Ashley Davisis the senior editor, fashion at National Jeweler, covering all things related to design, style and trends.

The Latest

Woman with crossed hands and rings on fingers
FinancialsJun 02, 2026
Signet Jewelers’ Q1 Sales Up 2% As It Focuses on ‘Core Four’

The jewelry retailer is zeroing in on Zales, Jared, Kay Jewelers, and Blue Nile as it looks to create unique brand identities for each.

Dr. Akinwumi Adesina, chairperson of the Diamonds for Development Fund
SourcingJun 02, 2026
Leader Appointed for Botswana’s Diamonds for Development Fund

Dr. Akinwumi Adesina, a development economist, will head the fund created to help Botswana diversify its economy.

James Marks
WatchesJun 02, 2026
Watch Industry Veteran James Marks Joins Sotheby’s

Sotheby’s has appointed the former Phillips executive as its global head of private sales and retail in its watches division.

PG-05-SHOT-2-LUCIDA.033 1.png
Brought to you by
All Eyes on Gold Prices. Alternatives to Look For. And What to BEWARE of in Vegas

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

People shopping in a jewelry store
IndependentsJun 02, 2026
State of Retail: 6 Things Retailers Should Know About Consumers Today

From Gen Z’s view of luxury to “doom spending,” these are the six consumer trends to note this year.

Weekly QuizMay 28, 2026
This Week’s Quiz
Test your jewelry news knowledge by answering these questions.
Take the Quiz
Zahn-Z Big Zaha Art Deco Ring
Events & AwardsJun 01, 2026
Design Atelier Brands Have a Big Night at Emotional Couture Design Awards

The show started by honoring Mildred Marcano, ended with a tearful Beth Anne Bonanno, and recognized a dozen-plus designers in between.

Rapaport's rebranding
SourcingJun 01, 2026
RapNet Rebranding as Rapaport Trade

The revamped online diamond marketplace will feature pricing intelligence and data-driven tools for more efficient buying and selling.

1872x1052-NextGem-2026-National-Jeweler-Advertorial.jpg
Brought to you by
How Modern Training Is Becoming a Competitive Advantage for Jewelry Retailers

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

Gemfields emeralds
SourcingJun 01, 2026
Gemfields’ Higher-Quality Emerald Auction Achieves $26.8M

The miner said demand for higher-quality emeralds is stable, but there is notable caution in the market.

Cultus Artem River of Heaven Necklace
CollectionsMay 29, 2026
Cultus Artem’s Necklace Is the Oasis in Las Vegas’ Desert

The “River of Heaven” necklace, our Piece of the Week debuting at Couture, combines 26 salt and pepper diamonds spaced by Tahitian pearls.

Sean Dunn, Amy Greenberg, Elise Greenberg, Coleman Clark, Mitchell Clark
IndependentsMay 29, 2026
Meet the 2026 Retailer Hall of Fame Inductees

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

Jesse Itzler
Events & AwardsMay 28, 2026
JCK Announces Jesse Itzler as 2026 Keynote Speaker

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

JCK Rocks Nelly Graphic
Events & AwardsMay 28, 2026
JCK Rocks To Ride With Nelly

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

A screen shot of The Clear Cut's website
MajorsMay 28, 2026
Signet Jewelers to Buy The Clear Cut

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

Itä Aguaviva Tassel Pendant, Ashaha Anzar Cuff, Cultus Artem Quetzal Ring
CollectionsMay 28, 2026
Meet The 17 Newcomers to Couture’s Design Atelier

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

GCAL 8x Cushion Cut diamond
GradingMay 28, 2026
GCAL By Sarine Launches 8X Cushion Cut

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

Stock image of police cars with their lights on
Events & AwardsMay 27, 2026
5 Security Tips for Las Vegas Jewelry Market Week 2026

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

Smart Age Solutions CEO and National Jeweler columnist Emmanuel Raheb
ColumnistsMay 27, 2026
What Jewelers Can Learn From Luxury Fashion’s Digital Playbook

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

Couture The Iridescence designers Aziza-Abdullah Nicole, Cindy Liebe, Danyell Roscoe, Jessica Liu, Marie Helena from Rebel Jewelry, Julia de Souza, and Xiao Wang
Events & AwardsMay 27, 2026
Couture’s ‘The Iridescence’ Will Showcase 7 Emerging Jewelry Designers

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

National Jeweler columnist Sherry Smith, partner at The Retail Smiths
ColumnistsMay 26, 2026
The Key Mindset for Better Trade Show Buying

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

JCK Talks panel on stage
Events & AwardsMay 26, 2026
12 JCK Talks Sessions to Add to Your Las Vegas Schedule

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

CBG Curated Designer Project Logo
Events & AwardsMay 26, 2026
CBG Brings Its Curated Designer Project to Las Vegas Show

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

Walters Faith
TrendsMay 26, 2026
Amanda’s Style File: A Cooldown Is Coming

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

Shot of attendees at a JA New York jewelry trade show
Events & AwardsMay 22, 2026
Instore Buys JA New York Show

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

Buccellati Waikiki gold and diamond earrings
FinancialsMay 22, 2026
Richemont’s Jewelry Brands Lead the Charge in Q4

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.

Leigh Maxwell Bauble Earrings
CollectionsMay 22, 2026
Leigh Maxwell Celebrates 5 Years at Couture With ‘Bauble’ Collection

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

Stuller 2026-2027 packaging and display catalog
MajorsMay 22, 2026
Stuller’s New Packaging, Display Catalog Is Out

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

×

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