Supplier BulletinJul 03, 2025
Protect Your Customers and Your BusinessSponsored by the Gemological Institute of America
AuctionsJul 10, 2020
12-Carat Marquise Blue Diamond Sells for $16M at Christie’s
The July 9 Magnificent Jewels auction in Hong Kong totaled $39.8 million.
This 12.11-carat fancy intense blue diamond led the recent Christie’s Hong Kong Magnificent Jewels auction and went for well above its pre-sale estimate when it garnered nearly $16 million.
Hong Kong—A 12-carat blue diamond proved there’s still demand for colored diamonds when it went for well above its pre-sale high estimate at auction Thursday.
Christie’s Magnificent Jewels auction in Hong Kong marked one of its first live sales for the house since the onset of the pandemic.
The auction was led by a 12.11-carat internally flawless marquise-cut fancy intense blue diamond, which sold for $15.9 million, compared with its pre-sale estimate of between $8 million and $12 million, after 15 minutes of bidding, according to Christie’s.
Following behind the blue diamond at No. 2 in the auction results was a 19.53-carat Burmese star ruby pendant, with ruby and diamond accents, by Edmond Chin for Etcetera (pictured below).
The piece garnered $2.7 million at auction Thursday, falling within its pre-sale estimate range.
At No. 3 was a 17.95-carat cut-cornered rectangular step-cut diamond ring accented with tapered baguette-cut diamonds, which went for $1.6 million.
Tied at No. 4 was another blue diamond ring, this one a 2.08-carat fancy intense blue marquise brilliant-cut, and a necklace featuring two oval-cut sapphires weighing 12.81 carats and 6.50 carats.
Both of those pieces went for above their pre-sale estimate high when they sold for $1.5 million Thursday.
Rounding out some of the top lots were a 14.70-carat Kashmir sapphire and diamond ring that sold for a little more than $1.3 million; a 6.06-carat Burmese ruby and diamond ring and a pair of jadeite, ruby and diamond earrings, which both went for just under $1.3 million each; and a 10.59-carat diamond ring from Harry Winston for approximately $868,000.
The July 9 Magnificent Jewels auction totaled $39.8 million. For full results, visit Christies.com.
More on Auctions
The Latest
MajorsJul 03, 2025
Brilliant Earth Names Tennis Star Madison Keys as Its New AmbassadorThe 2025 Australian Open champion is the jewelry brand’s first athlete ambassador.
MajorsJul 03, 2025
Muse Sets Up Shop in Nordstrom’s New Jewelry HallThe West Village jewelry boutique’s new shop-in-shop is the cornerstone of Nordstrom’s revamped jewelry hall.
Brought to you by
Investing in the Next Generation of Bench JewelersThe Seymour & Evelyn Holtzman Bench Scholarship from Jewelers of America returns for a second year.
SourcingJul 03, 2025
SRK Announces Its Natural Diamonds Are Now Carbon-NegativeThis past year, the manufacturer said it recorded below-zero emissions per carat of natural diamond.
Weekly QuizJul 02, 2025
This Week’s QuizTest your jewelry news knowledge by answering these questions.
CollectionsJul 03, 2025
Piece of the Week: A Firework of Diamonds From YepremThe brand’s “Golden Strada” statement necklace features round, marquise, and pear diamonds that sparkle like Fourth of July fireworks.
CrimeJul 03, 2025
JSA Shares Holiday Weekend Security Tips Amid Spike in BurglariesJSA’s Scott Guginsky provided a list of nine security measures jewelers should observe while locking up for the long weekend.
Brought to you by
Jewelers of America is Headed to Las Vegas for JCK 2025The countdown is on for the JCK Las Vegas Show and JA is pulling out all the stops.
MajorsJul 02, 2025
Boucheron Looks to LA for First West Coast FlagshipLocated on Rodeo Drive, the store’s design was inspired by Hollywood and Los Angeles culture.
MajorsJul 02, 2025
Marco Bicego Opens Milan FlagshipThe new location continues the brand’s celebration of its 25th anniversary.
WatchesJul 02, 2025
Chrono24 Revamps Brand, Launches New CampaignThe online watch marketplace’s “Time Is Our Thing” campaign highlights the importance of time.
SourcingJul 02, 2025
Bernadette Mack Joins Gem Legacy as Executive DirectorShe will oversee strategic planning, fundraising, industry partnerships, and the launch of the Gem Legacy Campus in Tanzania.
CrimeJul 02, 2025
Pandora, Amazon Partner to Uncover Counterfeit Jewelry NetworkWorking with Amazon’s Counterfeit Crimes Unit and law enforcement, Pandora helped to shut down a large-scale counterfeit network in China.
MajorsJul 01, 2025
Cast Closes Business, Plans for RelaunchThe jewelry company has closed its three California brick-and-mortar stores, as well as its online shop, for now.
Events & AwardsJul 01, 2025
William Goldberg Diamonds, FIT Partner for Apprenticeship ProgramThe company is providing the opportunity for an FIT student to work alongside master diamond cutter Willie Lopez in its workshop.
IndependentsJul 01, 2025
Elie Hannoush, Founder of Hannoush Jewelers, Dies at 73He is remembered for his successful entrepreneurship, generosity, and dedication to his family.
MajorsJul 01, 2025
Claire’s Is Looking for a Buyer, Report SaysThe jewelry store chain has reportedly been struggling with costs related to tariffs as well as tough retail competition.
TrendsJul 01, 2025
Amanda’s Style File: Red Hot RubiesWelcome warm summer days with red hot rubies perfectly chosen as July’s birthstone.
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.
ColumnistsJun 30, 2025
The Smart Lab: Why Q3 Is the Secret Weapon For Holiday Jewelry SalesThe best time to prepare for the holiday season is right now, according to columnist Emmanuel Raheb.
Events & AwardsJun 30, 2025
AGA Names Recipient of 2025 Gemological Education ScholarshipThis year’s winner is Morgan Keefe, who is currently studying at GIA to be a gemologist.
IndependentsJun 30, 2025
Melanie Grant’s New Book Explores 200 Years of Jewelry“The Jewelry Book” comes out this September.
TechnologyJun 27, 2025
Gemist Raises $6M in Funding to Scale Jewelry Tech PlatformThe company is focused on modernizing the custom jewelry buying experience with e-commerce tools like product visualization and 3D styling.
IndependentsJun 27, 2025
David Webb Announces New Hires, PromotionsFollowing its recent acquisition, the storied brand has updated its leadership team and regional managers.
Events & AwardsJun 27, 2025
AGS, GIA Announce Beatrice Shipley Scholarship Winner AGS also named the recipient of its “Women in Leadership” scholarship.
CollectionsJun 27, 2025
Piece of the Week: Buddha Mama’s ‘Monstera’ Wrap RingThe 20-karat yellow gold and diamond wrap ring is modeled after the Monstera plants in the garden of the brand’s Miami villa.
MajorsJun 26, 2025
Why Rocksbox Is Opening Stores As Signet Jewelers DownsizesRocksbox President Allison Vigil shared the retailer’s expansion plans, and her thoughts on opening stores in malls.
