Auctions

The ‘Perfect’ 102-Carat Oval Diamond Sold for About $16M

AuctionsOct 06, 2020

The ‘Perfect’ 102-Carat Oval Diamond Sold for About $16M

Offered without reserve as a “gauge of the market,” the stone’s hammer price fell well short of similar stones.

20201006_102ct-header.jpg
This 102.39-carat oval-shaped D flawless diamond went up for auction Monday without reserve or a pre-sale estimate. It ended up selling for $15.7 million.

Hong Kong—The results of a Sotheby’s auction described as a true “gauge of the market” are in.

On Monday, Sotheby’s Hong Kong put a 102.39-carat D flawless oval diamond up on the auction block with no reserve price and no pre-sale estimate in a single-lot sale.

This meant the highest bid was the winning bid.

The stone ended up selling for about $15.7 million to a private buyer, falling well short of what similar stones have garnered at auction in recent years.

A 118.28-carat D color flawless oval diamond, for example, sold for $30.8 million at Sotheby’s Hong Kong in October 2013, while a pear-shaped 101.73-carat D color flawless diamond sold to Harry Winston for $26.7 million at Christie’s Geneva earlier that year.

When Sotheby’s announced the sale in September, Quig Bruning, head of the auction house’s jewelry department in New York, called the diamond “an extraordinary stone” that is “a beautiful example of a diamond.”

Sotheby’s did not reveal the name of the company that consigned the diamond for sale but did say Diacore cut and polished the stone over the course of a year from a rough diamond weighing 271 carats mined in 2018 at De Beers’ now-closed Victor Mine in Canada.

The auction house said it is one of only eight diamonds of “regular shape” (meaning modern cuts, not old mine, old European, etc.) that is over 100 carats, D color and flawless/internally flawless ever offered at auction.


Though the auction featured a live component Monday in Hong Kong, Sotheby’s had been taking online bids for the stone since mid-September.

It confirmed the highest online bid for the oval diamond was nearly $11 million, which it said is the largest bid ever placed for a jewel online.

But the winning bid ended up coming over the phone from a private collector in Japan, who renamed the diamond the “Maiko Star” after his second daughter, continuing a family tradition of sorts.

The same buyer also purchased an 88.22-carat oval diamond for nearly $14 million in April 2019 that he named the “Manami Star,” after his eldest daughter.
Brecken Branstratoris the senior editor, gemstones at National Jeweler, covering sourcing, pricing and other developments in the colored stone sector.

The Latest

Exterior and entryway of Boucheron’s Los Angeles Flagship
MajorsJul 02, 2025
Boucheron Looks to LA for First West Coast Flagship

Located on Rodeo Drive, the store’s design was inspired by Hollywood and Los Angeles culture.

Exterior of Marco Bicego Milan Flagship
MajorsJul 02, 2025
Marco Bicego Opens Milan Flagship

The new location continues the brand’s celebration of its 25th anniversary.

Chrono24 Time Is Our Thing campaign image
WatchesJul 02, 2025
Chrono24 Revamps Brand, Launches New Campaign

The online watch marketplace’s “Time Is Our Thing” campaign highlights the importance of time.

an instructor and a student in a bench jewelry classroom
Brought to you by
Investing in the Next Generation of Bench Jewelers

The Seymour & Evelyn Holtzman Bench Scholarship from Jewelers of America returns for a second year.

Bernadette Mack
SourcingJul 02, 2025
Bernadette Mack Joins Gem Legacy as Executive Director

She will oversee strategic planning, fundraising, industry partnerships, and the launch of the Gem Legacy Campus in Tanzania.

Weekly QuizJul 02, 2025
This Week’s Quiz
Test your jewelry news knowledge by answering these questions.
Take the Quiz
Counterfeit Pandora jewelry in bags and boxes
CrimeJul 02, 2025
Pandora, Amazon Partner to Uncover Counterfeit Jewelry Network

Working with Amazon’s Counterfeit Crimes Unit and law enforcement, Pandora helped to shut down a large-scale counterfeit network in China.

Cast Issa Rae
MajorsJul 01, 2025
Cast Closes Business, Plans for Relaunch

The jewelry company has closed its three California brick-and-mortar stores, as well as its online shop, for now.

Jewelers of America logo with meetup, State of the Majors, giveaway and massages
Brought to you by
Jewelers of America is Headed to Las Vegas for JCK 2025

The countdown is on for the JCK Las Vegas Show and JA is pulling out all the stops.

Eve Goldberg, Matthew Denatale, Willie Lopez, Benjamin Goldberg
Events & AwardsJul 01, 2025
William Goldberg Diamonds, FIT Partner for Apprenticeship Program

The company is providing the opportunity for an FIT student to work alongside master diamond cutter Willie Lopez in its workshop.

Elie Hannoush
IndependentsJul 01, 2025
Elie Hannoush, Founder of Hannoush Jewelers, Dies at 73

He is remembered for his successful entrepreneurship, generosity, and dedication to his family.

Claire’s store
MajorsJul 01, 2025
Claire’s Is Looking for a Buyer, Report Says

The jewelry store chain has reportedly been struggling with costs related to tariffs as well as tough retail competition.

Mindi Mond Spike Earrings
TrendsJul 01, 2025
Amanda’s Style File: Red Hot Rubies

Welcome warm summer days with red hot rubies perfectly chosen as July’s birthstone.

The Story of Everything Campaign, Toadstool Mushroom and Cosmic Egg
CollectionsJun 30, 2025
State Property’s New Jewelry Tells ‘The Story of Everything’

Co-founders Afzal Imram and Lin Ruiyin brought their son’s story of a cosmic egg, toadstool, and railroad to life in their new collection.

Smart Age Solutions CEO Emmanuel Raheb
ColumnistsJun 30, 2025
The Smart Lab: Why Q3 Is the Secret Weapon For Holiday Jewelry Sales

The best time to prepare for the holiday season is right now, according to columnist Emmanuel Raheb.

Morgan Keefe
Events & AwardsJun 30, 2025
AGA Names Recipient of 2025 Gemological Education Scholarship

This year’s winner is Morgan Keefe, who is currently studying at GIA to be a gemologist.

The Jewelry Book
IndependentsJun 30, 2025
Melanie Grant’s New Book Explores 200 Years of Jewelry

“The Jewelry Book” comes out this September.

Gemist
TechnologyJun 27, 2025
Gemist Raises $6M in Funding to Scale Jewelry Tech Platform

The company is focused on modernizing the custom jewelry buying experience with e-commerce tools like product visualization and 3D styling.

Jeff Preolo, David Stout, Levi Higgs, David Benavides
IndependentsJun 27, 2025
David Webb Announces New Hires, Promotions

Following its recent acquisition, the storied brand has updated its leadership team and regional managers.

Blake Graham and Jessica Kohoutek
Events & AwardsJun 27, 2025
AGS, GIA Announce Beatrice Shipley Scholarship Winner

AGS also named the recipient of its “Women in Leadership” scholarship.

Buddha Mama Monstera Ring
CollectionsJun 27, 2025
Piece of the Week: Buddha Mama’s ‘Monstera’ Wrap Ring

The 20-karat yellow gold and diamond wrap ring is modeled after the Monstera plants in the garden of the brand’s Miami villa.

Cashier handing Rocksbox bag to customer
MajorsJun 26, 2025
Why Rocksbox Is Opening Stores As Signet Jewelers Downsizes

Rocksbox President Allison Vigil shared the retailer’s expansion plans, and her thoughts on opening stores in malls.

Penny Ruston
IndependentsJun 26, 2025
Penny Ruston Dies at 80

The creator of the WJA Chicago chapter is remembered as a champion for women in the jewelry industry and a loving grandmother.

Stock image of woman shopping
SurveysJun 26, 2025
After Recovering in May, Consumer Confidence Dips in June

The decline was consistent across age groups and almost all income groups, with tariffs and inflation still top of mind.

Sorellina Playlist: Electric Dreams Campaign
CollectionsJun 26, 2025
Jam Out With Sorellina’s Jimi Hendrix-Inspired Jewels

The “Playlist: Electric Dreams” collection brings lyrics from the musician’s song, “Little Wing,” to life through fine jewelry.

The Jewelry Symposium event
Events & AwardsJun 26, 2025
The Jewelry Symposium Is Looking for Speakers for 2026 Event

The event is set for May 16-19 in Detroit, Michigan.

Exterior of Marissa Collections’ new store in Nantucket, Massachusetts
IndependentsJun 25, 2025
Marissa Collections Opens in Nantucket as Legal Fight Continues

The Vault’s Katherine Jetter is accusing the retailer of using info she shared for a potential partnership to move into Nantucket.

Counterfeit Cartier “Juste Un Clou” bracelet
CrimeJun 25, 2025
Customs Nabs Another Big Shipment of Fake Cartier, Van Cleef Jewelry

Agents seized 2,193 pieces, a mix of counterfeit Cartier “Love” and “Juste Un Clou” bracelets, and Van Cleef & Arpels’ “Alhambra” design.

×

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