Auctions

Sotheby’s Sells 100-Carat Round for Record Per-Carat Price

AuctionsApr 09, 2018

Sotheby’s Sells 100-Carat Round for Record Per-Carat Price

The auction house declined to disclose the diamond’s full final sale price though.

20180209_Sothebys1.jpg
The Sotheby’s Diamonds retail boutique in London sold this 102.34-carat, Type IIa, D color, flawless round brilliant for a per-carat price that it said “far exceeds” that for any colorless diamond sold at auction.

London--Two months after the Sotheby’s Diamonds retail boutique in London unveiled a 102.34-carat round diamond, it has found a buyer for the stone.

The Type IIa GIA-graded diamond is the largest round, D color, flawless diamond on record, and the only round brilliant over 100 carats with perfect color and clarity, according to the auction house.

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

Sotheby’s would not reveal the identity of the buyer or the total price paid, only noting that the final price per carat “far exceeds” that for any colorless diamond sold at auction. The current price-per-carat auction record for a white diamond is $260,252, set at Sotheby’s in Hong Kong in 2013.  

When Sotheby’s unveiled the diamond in February, it told National Jeweler that not only would it beat the price-per-carat record, but it also would 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.

The auction house did not respond by press time when asked if the diamond had achieved the latter.

Patti Wong, founder and chairman of Sotheby’s Diamonds, said, “When the new custodian of this stone first beheld it, they were, like everyone else who has seen it, completely captivated. It is hard to believe that something so ancient … can be so alive, so full of fire and blinding brilliance. A rarity in the mythical world of 100-carat stones, this diamond is a wonder of nature and of man’s ability to shape nature’s creations into an object of ultimate beauty.”

Sotheby’s operates two other Sotheby’s Diamonds retail locations, one in New York and one in Hong Kong.

Brecken Branstratoris the senior editor, gemstones at National Jeweler, covering sourcing, pricing and other developments in the colored stone sector.

The Latest

 Sapphire tennis necklace
EditorsNov 07, 2025
Piece of the Week: An MVP’s Sapphire Tennis Necklace

At the 2025 World Series, the Los Angeles Dodgers’ Yoshinobu Yamamoto sported a custom necklace made by California retailer Happy Jewelers.

Foundrae Palm Beach Location Exterior and Founder Beth Hutchens
IndependentsNov 07, 2025
Foundrae’s New Palm Beach Location Is a ‘Golden Solarium’

The brand’s seventh location combines Foundrae’s symbolic vocabulary with motifs from Florida’s natural surroundings.

Watches of Switzerland Mall of America store
FinancialsNov 07, 2025
Watches of Switzerland’s H1 Sales Up 8%

The retailer also shared an update on the impact of tariffs on watch customers.

20-Under-40-2025-LV.png
Brought to you by
Jewelers of America Aligns New Mission to Create Meaningful Impact for Members

From educational programs, advocacy, and recent MJSA affiliation, Jewelers of America drives progress that elevates businesses of all sizes.

AGTA Spectrum winners
SourcingNov 06, 2025
Pink Tourmaline Bracelet, Emerald Suite Take Top Spectrum Honors

Pink and purple stones were popular in the AGTA’s design competition this year, as were cameos and ocean themes.

Weekly QuizNov 06, 2025
This Week’s Quiz
Test your jewelry news knowledge by answering these questions.
Take the Quiz
G. St x Jewel Boxing Raffle for City Harvest Graphic
IndependentsNov 06, 2025
Greenwich St. Jewelers Hosts Raffle Supporting Food Rescue

All proceeds from the G. St x Jewel Boxing raffle will go to City Harvest, which works to end hunger in New York City.

Courtney Cornell
IndependentsNov 06, 2025
Cornell’s Jewelers Names New President

Courtney Cornell is part of the third generation to lead the Rochester, New York-based jeweler.

Supplier Spotlight -Recorded-Webinar.png
Brought to you by
Watch: Introducing GIA Jewelry Services

Supplier Spotlight Sponsored by GIA

Trucks at Orapa diamond mine
SourcingNov 06, 2025
De Beers’ Production, Sales Increase in Q3

De Beers also announced more changes in its upper ranks ahead of parent company Anglo American’s pending sale of the company.

Ulrich Wohn
WatchesNov 05, 2025
Shinola President Steps Down Just as He Starts

Former Signet CEO Mark Light will remain president of Shinola until a replacement for Ulrich Wohn is found.

Tyla Pandora Talisman collection
FinancialsNov 05, 2025
Pandora Posts Modest Q3 Sales Growth Amid ‘Weak’ Consumer Sentiment

The company focused on marketing in the third quarter and introduced two new charm collections, “Pandora Talisman” and “Pandora Minis.”

Brilliant Earth Jane Goodall Peace Medallion
FinancialsNov 05, 2025
Brilliant Earth’s Q3 Sales Climb 10%

The jewelry retailer raised its full-year guidance, with CFO Jeff Kuo describing the company as “very well positioned” for the holidays.

US Supreme Court
Policies & IssuesNov 04, 2025
Supreme Court to Hear Tariffs Case Wednesday

Ahead of the hearing, two industry organizations co-signed an amicus brief urging the court to declare Trump’s tariffs unlawful.

Stuller Inc.’s Danny Clark, Matt Stuller, and Belit Myers
MajorsNov 04, 2025
Danny Clark to Become Stuller CEO, Succeeding Matt Stuller

Stuller COO Belit Myers will take on the additional role of president, with all changes effective at the start of 2026.

Headshot of National Jeweler columnist Peter Smith
ColumnistsNov 04, 2025
Peter Smith: What Do Birds Have to Do With the Price of Gold?

Smith cautions retailers against expending too much energy on things they can’t control, like the rising price of gold.

Mellerio Jardin Pierreries Necklace
TrendsNov 04, 2025
Amanda’s Style File: Fall Colors for November Birthdays

Citrine and topaz are birthstones fit for fall as the leaves change color and the holiday season approaches.

Weston Jewelers Fort Lauderdale store rendering
IndependentsNov 04, 2025
Weston Jewelers Heads to Fort Lauderdale

The family-owned jeweler will open its fourth store in Florida in late 2027.

Two of the three suspects in burglary at Queens jeweler’s home
CrimeNov 03, 2025
Men Dressed as Construction Workers Burglarize Jeweler’s Home

The NYPD is looking for three men who stole a safe and jewelry valued at $3.2 million from the home of a jeweler in Jamaica Hills, Queens.

Matthew Rosenheim
MajorsNov 03, 2025
Matthew Rosenheim Takes Over as JA Board Chair

The trade organization also announced its executive committee and five new directors.

Muse’s Have a Heart x Diamonds Do Good Collection on Flaviana Matata
CollectionsNov 03, 2025
Muse’s ‘Have a Heart’ Collab Returns, Now With DDG

The “Have a Heart x Diamonds Do Good” collection is championed by model and humanitarian Flaviana Matata and will benefit her foundation.

Heavenly Vices Mother Father Spinner Necklace
TrendsOct 31, 2025
Piece of the Week: A Spinner Fit for ‘Frankenstein’

This “Mother Father” spinner necklace from Heavenly Vices Fine Jewelry draws inspiration from Victorian Era jewelry.

Interpol Stolen Works of Art Database, The Louvre Museum Graphic
CrimeOct 31, 2025
5 More Arrested in Louvre Heist, Jewelry Still Missing

The suspects were rounded up in Paris and its suburbs on Wednesday night, but none of the stolen jewels were recovered with them.

My Next Question webinar graphic
Recorded WebinarsOct 31, 2025
Watch: How to Master Google Reviews for Your Business

Experts share top tips on how to encourage positive reviews and handle negative feedback.

GIA iD100® Technology
Supplier BulletinOct 30, 2025
Protect Your Customers and Your Business

Sponsored by the Gemological Institute of America

Seattle PD image of Menashe & Sons Jewelers following Aug. 14 smash-and-grab robbery
CrimeOct 30, 2025
29-Year-Old Man Charged in Multiple Seattle-Area Smash and Grabs

The suspect faces charges in the August robbery of Menashe & Sons Jewelers and is accused of committing smash and grabs at two pawn shops.

Alison Lou Lumière Fine Collection On-Model
Lab-GrownOct 30, 2025
Alison Lou’s New Collection Uses Lab-Grown Diamonds and Resin

The “Lumière Fine” collection was born from designer Alison Chemla’s interest in the transformative power of light.

Buddha Mama gold skull pave huggies
TrendsOct 30, 2025
Amanda’s Style File: A Haunted Halloween

Show off your spooky side with these 12 festive jewels.

×

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