IndependentsNov 03, 2026
Longtime Jewelry Marketer Arthur Klein Dies at 89Klein, who had his own marketing agency and worked for Gabriel & Co. and Trans American Diamond, is remembered as a kind man.
AuctionsMar 14, 2016
10-Carat Blue Diamond to Fetch $35M
The fancy vivid “De Beers Millennium Jewel 4,” once part of a group of diamonds De Beers gathered to mark the millennium, will be up for auction at Sotheby’s Hong Kong.
Blue diamonds, like the De Beers Millennium Jewel 4 that Sotheby’s will put up for auction next month, owe their color to boron impurities.
Hong Kong--The largest oval-shaped fancy vivid blue diamond ever to appear at auction is expected to fetch $35 million this April at Sotheby’s.
The “De Beers Millennium Jewel 4” is a 10.10-carat oval-shaped internally flawless fancy vivid blue diamond that originally was part of the De Beers Millennium Jewels, the collection the company unveiled in 2000 to commemorate the occasion.
The collection was comprised of 12 rare and valuable diamonds from the Cullinan Mine in South Africa that took decades to assemble and included the 203.04-carat “Millennium Star.” Nine out of the 11 blue diamonds in the collection were graded by the Gemological Institute of America as being fancy vivid.
To date, only one diamond out of the dozen has ever come onto the open market, Sotheby’s said. The auction house sold the “De Beers Millennium Jewel 11,” a 5.16-carat internally flawless pear-shaped fancy vivid blue diamond, in April 2010 in Hong Kong.
Now part of an Asian private collection, the fancy vivid blue De Beers Millennium Jewel 4 will be the second stone from the collection to hit the market when it goes up on the auction block April 5 in Hong Kong at Sotheby’s sale of Magnificent Jewels & Jadeite.
“There have been fewer and fewer new rough diamonds discovered over the last decade that produce this color,” said Tom Moses, executive vice president and chief research and laboratory officer at the GIA. “Most of the recent diamonds offered for sale in this category are coming from private collections, not diamond mines.”
The diamond has a pre-sale estimate of $30 to $35 million. The current world record for a diamond sold at auction is $48.5 million and is held by the Blue Moon of Josephine, a 12.03-carat cushion-shaped internally flawless fancy vivid blue diamond sold at Sotheby’s Geneva last November.
This 4.08-carat fancy vivid orange diamond ring has a pre-sale high estimate of $1.8 million.
Also part of Sotheby’s April 5 sale in Hong Kong is an “exceptional” jadeite ring, which is expected to sell for up to $4.5 million.
An unheated Burmese ruby and diamond bracelet made by Cartier Paris circa 1920 could fetch between $480,000 and $680,000.
Editors' Picks
Sponsored by
More on Auctions
The Latest
IndependentsNov 03, 2026
Zadok Jewelers Toasts To 50 Years With Diamond Bracelet GiveawayTo enter the giveaway, locals can purchase a featured beverage from one of eight participating restaurants in Houston and Austin, Texas.
Events & AwardsNov 03, 2026
David Yurman Gem Awards Grant Opens 2027 ApplicationsThe grant recipient will be awarded $50,000 as well as mentoring meetings with executives at David Yurman and other industry executives.
Brought to you by
How Overnight Mountings’ Bridal Builder Makes Custom Engagement Ring Design Easier to SellWith customization becoming more expected in engagement ring shopping, the Bridal Builder makes the process tangible.
Events & AwardsNov 03, 2026
NAJA, Instappraise Name 2026 Scholarship WinnersThe winners include a non-NAJA member seeking training, a member beginning NAJA courses, and a member becoming a Certified Master Appraiser.
Weekly QuizOct 29, 2026
This Week’s QuizTest your jewelry news knowledge by answering these questions.
CrimeNov 02, 2026
Customs Seizes More Than 400 Fake Audemars Piguet WatchesIt is one of several seizures of counterfeit jewelry and watches by U.S. Customs and Border Protection officials in Louisville this year.
MajorsNov 02, 2026
Lawrence Bock, Caryl Capeci, Amanda Coleman-Phelps Join JA Board Jewelers of America announced the additions to its board of directors following its annual general meeting, held last week.
Brought to you by
A Diamond Is Forever Launches 2026 Holiday Campaign Championing Natural DiamondsA Diamond Is Forever's holiday campaign reimagines natural diamond icons for a new generation celebrating individuality.
CollectionsNov 02, 2026
Olympian Kristi Yamaguchi, Heller Jewelers Expand ‘Always Dream’ CollectionThe jewelry collection supports Yamaguchi’s Always Dream foundation, which provides reading and educational resources to families in need.
Events & AwardsOct 30, 2026
Illuminating Carved Paraiba Pendant, Suite of Moonstones Wow at Spectrum AwardsSpectrum’s “Best of Show” honors went to a 101-carat Paraiba carved to look like Medusa that has a magnet-activated LED light.
TrendsOct 30, 2026
Edina Kiss’ Pendants Say ‘Eye’m Watching You’Our Halloween Pieces of the Week are four “Eye” pendants, each set with colorful gemstones.
MajorsOct 30, 2026
The RealReal Hires Former eBay Exec as New Chief Merchandising OfficerAlexis Hoopes expanded eBay’s “Authenticity Guarantee” program during her tenure.
WatchesOct 29, 2026
Bucherer Opens Rolex Boutique in Washington StateThe Rolex-owned retailer’s new 4,700-square-foot store’s façade honors the Pacific Northwest’s evergreen forests.
TrendsOct 29, 2026
Amanda's Style File: All Treats, No Tricks Get into the Halloween spirit with this roundup of 13 spooky jewels.
MajorsOct 29, 2026
Gesswein Hires Longtime Bench Jeweler, Educator Ann CahoonCahoon was appointed strategic account and educational program manager at Gesswein, which recently joined Continental Buying Group.
MajorsOct 29, 2026
Amanda Seyfried Stars In Tiffany & Co.’s Holiday CampaignTiffany & Co.’s latest ambassador makes her debut in its “Love Is a Gift” holiday campaign.
EditorsOct 28, 2026
These Wicked Jewels Will Cast a Spell on YouFor her annual Halloween story, Senior Editor Lenore Fedow highlights bewitching jewels fit for a witch that go from day to unholy night.
CrimeOct 28, 2026
Man In Florida Who Swallowed Tiffany & Co. Earrings ConvictedJaythan Gilder was found guilty of robbery and grand theft after stealing and then ingesting nearly $800,000 worth of Tiffany & Co. jewelry.
SurveysOct 28, 2026
Consumer Confidence Up in October as Gas Prices EaseConsumer confidence remains on the long-term downward trend that’s persisted over the past few years, said a Conference Board economist.
MajorsOct 28, 2026
Stuller’s Holiday Campaign Lets the ‘Magic of the Moment’ ShineThe holiday campaign includes key jewelry trends, a curated holiday gift guide, and resources to help jewelers prepare for holiday shoppers.
SourcingOct 27, 2026
De Beers Celebrates the Holidays With New ‘Desert Diamonds’ CampaignThe “Icons” holiday campaign spotlights four classic diamond jewelry styles reimagined in “Desert Diamond” tones.
IndependentsOct 27, 2026
Solomon Brothers Acquires Mervis Diamond ImportersSolomon Brothers, which has three stores in the Metro Atlanta area, said it may continue to acquire other independent jewelers.
IndependentsOct 27, 2026
Gabriel & Co. Supports Charity Partner DKMS With Gala, New JewelsThe fine jewelry brand raised $2.3 million at its annual gala that supports the nonprofit’s fight against blood cancer and blood disorders.
Events & AwardsOct 27, 2026
JFC Announces 2027 ‘Facets’ HonoreesThe annual fundraising event is slated for June 6, 2027, at The Venetian Resort in Las Vegas.
CollectionsOct 26, 2026
Bliss Lau’s ‘Vantage’ Point Is the Hawaiian HorizonIn her “Vantage” collection, Lau explores heritage, identity, and inner strength through designs featuring blue-green Guatemalan jade.
MajorsOct 26, 2026
Tiffany & Co. Takes Consumers Behind the ScenesThe jeweler gave the public backstage tours of its flagship store and its design and innovation workshop as part of LVMH’s open house.
Events & AwardsOct 26, 2026
Support JFC’s ‘Monster Mash Challenge,’ If You DareVote for which jewelry professional should dress up as a monster to support Jewelers for Children’s annual Halloween fundraiser.
