AuctionsMar 20, 2026
Sotheby's, De Beers Unveil ‘Jwaneng 28.88’ DiamondThe flawless, Type IIa stone is estimated to achieve up to $2.8 million at the auction house’s high jewelry sale in April.
Search
Find your results below. Don’t see the gem you were hoping to find? Try searching again using different keywords.
234 results for “Big & Important Diamonds”
AuctionsMar 19, 2026
26-Carat Diamond Tops $1M at AuctionThe historic stone, which sold at Elmwood’s in London, is the largest white diamond to be offered on the U.K. market in more than a decade.
SourcingMar 18, 2026
Lucara Recovers Nearly 37-Carat Blue DiamondThe “stunning” Type IIb stone was found via x-ray technology at its Karowe mine in Botswana.
AuctionsMar 11, 2026
‘Spectacular’ 26-Carat Diamond Going Up for Auction in London The largest white diamond to come to market in the U.K. in more than a decade, the VVS1, I-color stone is expected to top $1 million.
SourcingJan 15, 2026
Nearly 42-Carat Blue Diamond Discovered in South AfricaPetra Diamonds unearthed the 41.82-carat, Type IIb blue diamond at the Cullinan Mine.
AuctionsDec 16, 2025
Suzanne Belperron, JAR Shine in Sotheby’s First Auctions at New HQSotheby’s held its first two jewelry sales at the Breuer building last week, and they totaled nearly $44 million.
AuctionsDec 09, 2025
‘Desert Rose’ Diamond Sells for $8.8M in Abu DhabiThe sale of the 31.68-carat, sunset-hued stone was part of Sotheby’s first series of events and auctions in Abu Dhabi.
AuctionsNov 12, 2025
‘Mellon Blue’ Diamond Sells for $7M Less Than It Did a Decade AgoA buyer paid $25.6 million for the diamond at Christie’s on Tuesday. In 2014, Sotheby’s sold the same stone for $32.6 million.
AuctionsNov 10, 2025
300+ Colored Diamonds Up for Auction at Christie’sLate collector Eddy Elzas assembled “The Rainbow Collection,” which is offered as a single lot and estimated to fetch up to $3 million.
AuctionsOct 27, 2025
Napoleon Left This Brooch Behind, And Now It’s Up For AuctionIt is part of Sotheby’s “Royal & Noble Jewels” sale along with an ornate hair ornament and an old mine-cut light pink diamond ring.
GradingOct 21, 2025
GIA Examines Rare Bicolor Pink DiamondThe stone’s two zones, one pink and one colorless, may have formed at two different times, the lab said.
AuctionsOct 20, 2025
Sotheby's To Auction 10-Carat Vivid Pink DiamondMaking its auction debut, "The Glowing Rose" is expected to fetch $20 million at the November jewelry sale in Geneva.
SourcingSep 23, 2025
Super Smalls’ New Book Introduces Kids to Gems, Fine JewelryThe “Super Book of Gems” dives into the Mohs Hardness Scale, the Four C’s, and designs from jewelers like Cartier and Bulgari.
SourcingSep 22, 2025
Rio Tinto Announces Final ‘Beyond Rare’ TenderThe miner is honoring the end of an era with an offering of 52 lots from the now-closed Argyle and the soon-to-close Diavik mines.
AuctionsSep 09, 2025
‘The Mellon Blue’ to Return to Auction, This Time at Christie’s The 9.51-carat fancy vivid blue diamond, which set two world auction records at Sotheby’s in 2014, is estimated to fetch up to $30 million.
SourcingSep 04, 2025
Lucara Unveils Unusual 37-Carat Pink DiamondThe Type IIa stone, recovered from Botswana’s Karowe diamond mine last month, features unique coloration.
AuctionsAug 29, 2025
Sotheby’s UAE Sale to Feature 32-Carat Fancy Vivid Orangy Pink DiamondThe highlight of a single-owner jewelry and watch collection, it’s estimated to fetch up to $7 million at auction this December.
SourcingJul 09, 2025
Florida Couple Finds 3-Carat Diamond in ArkansasThey discovered “The Dash Diamond,” named for their dog, at the Crater of Diamonds State Park earlier this month.
AuctionsJun 18, 2025
Historic ‘Marie-Thérèse Pink’ Diamond Fetches $14M at Christie’sThe 10-carat fancy purple-pink diamond with potential links to Marie Antoinette headlined the white-glove jewelry auction this week.
AuctionsMay 15, 2025
'The Mediterranean Blue' Diamond Sells for $21M at Sotheby’sA private American collector purchased the 10-carat fancy vivid blue diamond.
AuctionsMay 06, 2025
Harwell Godfrey Reimagines 10-Carat Blue Diamond for Met Gala-Ready BroochDesigner Lauren Harwell Godfrey made the piece as an homage to the 2025 gala’s theme, “Superfine: Tailoring Black Style.”
SourcingMay 05, 2025
Crater of Diamonds Yields 4-Carat Brown Diamond“The Duke Diamond” is the largest diamond registered at the Arkansas park so far this year.
AuctionsApr 29, 2025
‘Golconda Blue’ Diamond Pulled From AuctionThe 23-carat fancy vivid blue diamond, set to headline Christie’s May jewelry auction, was expected to sell for as much as $50 million.
AuctionsApr 15, 2025
23-Carat ‘Golconda Blue’ Heads to AuctionThe historic fancy vivid blue diamond set to headline Christie’s Geneva sale next month could sell for up to $50 million.
SourcingApr 03, 2025
Canadian Mine Produces 158-Carat Yellow Diamond Rio Tinto unearthed the diamond at its Diavik mine in Canada’s Northwest Territories.
