Auctions

Take a Peek at All the Big Stones Heading to Auction This Spring

AuctionsMar 29, 2021

Take a Peek at All the Big Stones Heading to Auction This Spring

The largest Kashmir sapphire to hit the block, according to Sotheby’s, and several stones weighing more than 100 carats are on offer.

20210329_Sothebys-header.jpg
Sotheby’s Geneva’s May Magnificent Jewels and Noble Jewels auction will feature two exceptional emeralds: an 80.45-carat step-cut Colombian emerald and a 104.40-carat pear-shaped Colombian emerald.
New York—It’s shaping up to be a great auction season for large stone lovers. 
 
Sotheby’s will have several notable colored gems and diamonds hitting the block at various sales this spring. 
 
The highlight must be a sapphire that will be sold in Geneva in May, which Sotheby’s has called the largest Kashmir sapphire to appear at auction.   
 
The 55.19-carat oval gem is set alongside a 25.97-carat Kashmir sapphire and diamond accents in a 1930s brooch formerly in the collection of Maureen Constance Guinness, Marchioness of Dufferin and Ava (1907-1998). The lot is expected to sell for between $2 million and $3 million. 
 
The jewel will be part of the house’s Magnificent Jewels and Noble Jewels auction in Geneva on May 11, where a number of other exceptional jewels will hit the block, including two significant pieces from an important noble collection.
 
The first is a Harry Winston brooch/pendant circa 1974, set with a 104.40-carat pear-shaped Colombian emerald, estimated to sell for between $1 million and $1.5 million. 


The sale will also include an 80.45-carat step-cut Colombian emerald and diamonds set in a brooch/pendant estimated to go for between $2.5 million and $3.5 million. 
 
Also heading to the block in Geneva in May is a necklace featuring a 111.73-carat cushion-shaped Ceylon sapphire and diamond accents. It has a pre-sale estimate of between $1.5 million and $2.5 million. 
 
That auction will also have a Harry Winston necklace with a detachable 126.43-carat cushion-shaped Ceylon sapphire and diamond accents that could garner between $1.2 million and $1.8 million.

 Related stories will be right here … 

Meanwhile, at the Sotheby’s New York Magnificent Jewels sale on April 15, bidders will have the chance to own an 82.54-carat oval-shaped Madagascar sapphire and diamond necklace. 

The lot is estimated to garner between $200,000 and $300,000 but will sell with no reserve, meaning there is no minimum price for it.
 
Not to be left out is the upcoming Magnificent Jewels auction in Hong Kong on April 20, starting with a diamond and rock crystal bangle from Cartier, featuring a 63.66-carat pear-shaped internally flawless, D color, Type IIa diamond (pre-sale estimate between $5.2 million and $8.4 million). 


The jewelry auction will also offer a Cartier ring set with a 43.35-carat emerald-cut fancy vivid yellow diamond ($2.39 million-$3.1 million) and an unmounted 39.88-carat emerald-cut D color, flawless, Type IIa diamond ($3.9 million-$5.2 million). 
 
The auction house said interest in gems of “exceptional size” is growing to include a wider range of collectors, buoyed by a growing understanding of the scarcity and value of these stones. 
 
To see all lots in the three upcoming Sotheby’s jewelry auctions, visit the websites for the New York sale on April 15, the Hong Kong sale on April 20 and the Geneva auction on May 11. 
 

The Latest

Industry journalist Rob Bates
SourcingMar 25, 2026
Rob Bates Steps Down as JCK News Director

After 28 years with JCK, the veteran industry journalist is launching his own publication on Substack called The Jewelry Wire.

AMNH Beryl
GradingMar 25, 2026
New York’s Natural History Museum, Wiley To Build Minerals Database

Wiley said the project will give scientists worldwide access to the American Museum of Natural’s History renowned mineral collection.

Boochier Flower Puff Campaign
CollectionsMar 25, 2026
Boochier Turns Flower Friendship Bracelets Into Fine Jewelry

The “Flower Puff” collection looks to beaded flower friendship bracelets from childhood, turning the silhouette into nostalgic fine jewelry.

GIA iD100®
Brought to you by
Protect Your Customers and Your Business

You deserve to know what you are selling–to protect your customers as well as your business and your reputation.

Community for Ethical Jewelry logo
Policies & IssuesMar 25, 2026
Community for Ethical Jewelry to Host Bench Jeweler Shortage Webinar

Set for April 2, the webinar will discuss how the jewelry industry can address the workforce gap.

Weekly QuizMar 19, 2026
This Week’s Quiz
Test your jewelry news knowledge by answering these questions.
Take the Quiz
Lisa Bayer
IndependentsMar 24, 2026
Lisa Bayer, Illustrator and Beloved Member of the Muse Family, Dies at 64

Bayer, founder of Lisa Bayer Designs, is remembered as “a bright light in every room.”

AGTA GemFair Tucson
SourcingMar 24, 2026
AGTA Solidifies Tucson Dates For 2027-2029

The next three editions of AGTA GemFair Tucson will feature a five-day show that includes Sunday.

TopImageCrop.jpg
Brought to you by
Is This You? Every Jeweler Has This Problem; We Have the Solution.

Every jeweler faces the same challenge: helping customers protect what they love. Here’s the solution designed for today’s jewelry business.

Tom Heap
WatchesMar 24, 2026
Christie’s Names New Senior Specialist, Watches

Former Sotheby’s executive Tom Heap has taken on the London-based role.

NYPD robbery media
CrimeMar 23, 2026
NYPD Looking for 3 Jewelry Store Robbery Suspects

The group of women allegedly robbed two Catbird stores and one Gorjana location on the afternoon of March 9.

Georgia May Jagger in Tommy Hilfiger campaign
FinancialsMar 23, 2026
Movado’s Q4 Sales Rise As Demand Grows From Younger Shoppers, Women

Movado CEO Efraim Grinberg noted continued strength in the fashion watch and accessible luxury segments in the U.S.

Marco Bicego Art of Craft Campaign Imagery
TrendsMar 23, 2026
Marco Bicego’s New Campaign Showcases ‘The Art of Craft’

After celebrating 25 years in 2025, the campaign marks a new chapter for the jewelry brand with the message that “Identity Creates Value.”

Couture Time to Watches logo
Events & AwardsMar 23, 2026
These Watch Brands Are Heading to Couture This Year

Couture and Time to Watches announced the watch brands, from big names to independents, attendees will see at the show.

Macy’s New York City Herald Square flagship
FinancialsMar 20, 2026
Macy’s Turnaround Plans Shows Promise, Boosted by Bloomingdale’s

Plus, why Saks Global’s bankruptcy may have given Bloomingdale’s an edge.

Tiffany & Co.’s Three Jean Schlumberger for Tiffany & Co. Archives Brooches
TrendsMar 20, 2026
‘Frankenstein’ Costume Designer Is Bejeweled In Brooches for Oscars Win

Costume designer Kate Hawley wore three archival Tiffany & Co. brooches, our Pieces of the Week, while accepting her first Oscar.

Women wearing Zales jewelry
FinancialsMar 19, 2026
Signet Jewelers to Close 100 Stores, Shutter James Allen Banner

The jewelry retailer announced changes to its store network and brand portfolio during its fourth-quarter earnings call.

Hand holding shopping bags
SurveysMar 19, 2026
NRF Forecasts 4% Retail Sales Growth in 2026

From a weaker labor market to inflation, NRF Chief Economist Mark Mathews gave insight on what retailers can expect this year.

26.36 carat round brilliant cut white diamond
AuctionsMar 19, 2026
26-Carat Diamond Tops $1M at Auction

The 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.

JCK Rocks Nelly Graphic
Events & AwardsMar 19, 2026
JCK Rocks To Ride With Nelly

Three-time Grammy award-winning artist Nelly is set to perform at the annual event at Tao Beach in Las Vegas on May 31.

Lady Wardington and diamond-clip brooch
AuctionsMar 18, 2026
Collection of the ‘Severely Beautiful’ Lady Wardington Fetches $161K

The model and fashion editor’s gold evening bags were the top lots at the London sale, going for more than $25,000 each.

My Next Question Episode 3 guest Johnny Nelson
PodcastsMar 18, 2026
Episode 3: An Interview With Jewelry Designer Johnny Nelson

Fresh off winning the David Yurman Gem Awards Grant, Nelson discusses the ring that launched his career and his plans for the future.

Lucara blue diamond
SourcingMar 18, 2026
Lucara Recovers Nearly 37-Carat Blue Diamond

The “stunning” Type IIb stone was found via x-ray technology at its Karowe mine in Botswana.

Stuller The Basics of Jewelry
MajorsMar 18, 2026
Stuller Releases New Edition of Jewelry Education Book

“The Basics of Jewelry” has been updated to include modern topics and visuals.

Mark and Candy Udell on stage at the 2026 Gem Awards
Events & AwardsMar 17, 2026
The Best Moments From the 2026 Gem Awards

Held just before the Oscars, the jewelry industry’s big awards show had its share of standout jewelry, gowns, and acceptance speeches.

Winter Tourmaline
SourcingMar 17, 2026
Cruzeiro Mine Debuts ‘Winter Tourmaline’

The Brazilian mine’s new collection features cabochons in soft, muted shades like silver and lilac.

Natalie Portman in Tiffany & Co. Jewelry
TrendsMar 17, 2026
Natalie Portman Is Tiffany & Co.’s New Ambassador

The Academy Award-winning actress stars in Tiffany & Co.’s latest commercial, which debuted Sunday night during the Oscars.

Jean-Marc Duplaix
MajorsMar 17, 2026
Kering Establishes Jewelry Division, Appoints CEO

The organizational change follows Kering’s promise of a transformation after declining sales in 2025.

×

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