Sotheby’s Geneva Showcases Exceptional Provenance and Record-Breaking Natural Diamonds

Each November, Geneva takes centre stage in the world of fine jewellery, and Sotheby’s 2025 High Jewellery and Royal & Noble Jewels sales reaffirm why the city remains its beating heart. This year’s auctions bring together a breathtaking display of natural diamonds, historical heirlooms, and masterful craftsmanship that celebrate centuries of artistry and provenance.

At the forefront of the Sotheby’s High Jewellery Sale is The Glowing Rose, an extraordinary 10.08-carat Fancy Vivid Pink diamond estimated at around USD 20 million. Its rare, “pure pink” hue—free from secondary tones—places it among the most valuable gemstones in existence. Comparable to celebrated stones such as the Williamson Pink Star and Pink Legacy, this exceptional diamond embodies the geological miracle of atomic distortion, which gives natural pink diamonds their ethereal glow. Stones of this size and purity are exceedingly rare, making The Glowing Rose the undeniable star of the season.

Colour remains the hallmark of this year’s Geneva sale. A pair of Fancy Vivid Yellow diamond earrings, weighing 38.66 and 38.88 carats, are expected to achieve between CHF 2,000,000 and CHF 3,800,000. Their radiant colour intensity and impressive carat weight represent the highest standards of fancy diamond grading. Equally captivating is a 4.50-carat Fancy Vivid Blue diamond, internally flawless and estimated at CHF 4,400,000 to CHF 5,800,000. The blue hue, caused by trace boron, adds to its rarity and appeal, offering collectors the coveted trifecta of exceptional colour, clarity, and size.

Among the coloured gemstones, a 7.69-carat “Royal Blue” Kashmir sapphire set in a ring-pendant combination by Van Cleef & Arpels is a standout. Revered for their velvety “sleepy” lustre, Kashmir sapphires are among the most desirable in the world, and this piece exemplifies the pinnacle of gemological beauty. Further artistry is showcased through a pair of sapphire, tsavorite garnet, and diamond earclips by JAR—vividly imaginative and estimated at CHF 300,000 to CHF 500,000—reflecting the contemporary genius of Joel Arthur Rosenthal.

The sale also includes signature creations by Van Cleef & Arpels, Cartier, Graff, and De Grisogono. Highlights include a 10.04-carat marquise-shaped D-colour diamond ring by Graff (VVS2 clarity, estimated CHF 320,000–560,000) and a De Grisogono ruby and diamond bombé ring featuring two step-cut diamonds (estimated CHF 55,000–75,000).

In tribute to a century of Art Deco design, Sotheby’s presents an array of geometric masterpieces from Cartier and Van Cleef & Arpels, embodying the symmetry and elegance that shaped modern jewellery aesthetics. Two private collections will also headline the event: one dedicated exclusively to Van Cleef & Arpels, and another—Aria of Jewels: The Collection of Antje-Katrin Kühnemann—featuring exceptional Cartier and De Grisogono pieces from the late philanthropist’s private trove.

The Royal & Noble Jewels: A Journey Through History

Complementing the High Jewellery Sale, Sotheby’s Royal & Noble Jewels auction unveils some of the most historically significant diamonds and heirlooms ever offered. Among them is a diamond brooch once owned by Emperor Napoleon Bonaparte, lost during his flight after Waterloo and later recovered by the Prussian Royal family. After more than two centuries in private hands, it now re-emerges for the first time at auction.

Also featured is a light pink diamond ring with royal lineage, once belonging to Empress Catherine I of Russia and later to Princess Neslishah Sultan, estimated between CHF 240,000 and CHF 400,000. A natural pearl and diamond jewel formerly owned by Cunegonde of Saxony (cousin of Louis XVI) carries an estimate of CHF 340,000 to CHF 500,000, while a diamond tiara with a wild roses motif from the Duchess of Portland (1774–1844) is expected to fetch CHF 100,000 to CHF 170,000.

Adding to the grandeur is a Cartier emerald and diamond necklace featuring an 11.78-carat Colombian emerald, commissioned in 1932, exemplifying Art Deco refinement and royal provenance.

Celebrating Provenance, Craftsmanship, and Natural Rarity

From Napoleon’s lost brooch to The Glowing Rose, Sotheby’s Geneva continues to highlight how exceptional gems transcend beauty—they embody heritage, artistry, and history. These November 2025 auctions remind the world that in fine jewellery, rarity, provenance, and craftsmanship remain the ultimate symbols of enduring value.

About DCLA
The Diamond Certification Laboratory of Australia (DCLA) is the official CIBJO-accredited laboratory for Australia, recognised for its expertise in diamond grading and certification. DCLA continues to support transparency and integrity within the global diamond trade, celebrating events such as Sotheby’s Geneva that showcase the brilliance and authenticity of natural diamonds.

31-Carat ‘Desert Rose’ Diamond Expected to Fetch $7 Million at Abu Dhabi Auction

Sotheby’s is set to showcase one of the world’s rarest diamonds during its upcoming series of luxury auctions and exhibitions in Abu Dhabi, held from 2 to 5 December at The St. Regis Saadiyat Island Resort. The events form part of Abu Dhabi Collectors’ Week, which will feature masterclasses, panel discussions, and curated exhibitions highlighting fine jewellery, timepieces, collector cars, luxury real estate, and other exceptional assets.

The highlight of the auction is “The Desert Rose”, a 31.86-carat fancy vivid orangy-pink diamond, the largest of its kind ever graded. This extraordinary pear-shaped gem—first unveiled in Sotheby’s “Beyond: The World’s Rarest Diamonds” exhibition earlier this year—makes its auction debut with an estimated value of USD $5–$7 million.

The timing of the event coincides with one of Abu Dhabi’s busiest weeks, which includes the Formula 1 Grand Prix, the Milken Institute Middle East and Africa Summit 2025, Abu Dhabi Finance Week, and Bitcoin MENA. Together, these prestigious gatherings are expected to attract a global audience of collectors, investors, and cultural leaders.

Following Sotheby’s successful inaugural sale in Saudi Arabia earlier this year, the Abu Dhabi auctions further underscore the Middle East’s growing influence in the global luxury and cultural landscape. Saadiyat Island, home to institutions such as the Louvre Abu Dhabi, the forthcoming Guggenheim Abu Dhabi, and the Zayed National Museum, continues to establish itself as a world-class destination for art and high-value collectibles.

The Desert Rose diamond’s debut marks a milestone in coloured diamond history—its rarity, hue, and size exemplify the exceptional standards that define the world’s most coveted gems.

— DCLA News Team

6.95-Carat Pink Diamond to Headline Vanderbilt Family Jewels Auction in Geneva

A spectacular 6.95-carat fancy vivid purplish pink Golconda diamond will lead The Geneva Jewels Auction: V, as Phillips Geneva prepares to offer an extraordinary collection of jewels once owned by the legendary Vanderbilt family, once America’s richest dynasty.

Among the highlights is a Tiffany & Co. 42.68-carat sugarloaf Kashmir sapphire and diamond brooch, estimated at US$1 million to US$1.5 million, alongside a step-cut Kashmir sapphire and diamond ring weighing 18.09 carats (estimate US$2.2 million to US$2.8 million). The sale also features a stunning pair of brilliant-cut diamond ear studs, weighing 8.00 and 8.28 carats, both graded D colour, VVS1 clarity, with an estimate of US$600,000 to US$850,000.

The Vanderbilt name is synonymous with immense wealth and American industrial power. The family’s fortune began with Cornelius Vanderbilt, who, at age 16, borrowed $100 from his mother to start a ferry service in 1810. He later built a shipping and railroad empire that made him the richest man in the United States, worth about $100 million at his death in 1877 — equivalent to at least $185 billion today.

His son, William Henry Vanderbilt, further doubled that fortune to over $200 million (around $370 billion in today’s terms). However, the family’s wealth gradually dispersed over subsequent generations, with the combined net worth of the Vanderbilt descendants now estimated at around $200 million.

The Geneva Jewels Auction: V, featuring The Vanderbilt Family Jewels, will take place on 10 November at Phillips Geneva, marking a rare opportunity for collectors to acquire pieces linked to one of America’s most storied families.

Source: DCLA

Forevermark Unveils New Concept Store in China

Forevermark has launched a concept store in Shanghai tailored to millennial shopping habits, marking its 1,000th branch in China.

The opening of the store, named Libert’aime, also celebrates the brand’s 10th anniversary of entering the country. The De Beers-owned brand designed the branch’s diamond-jewelry line with a young, self-purchasing consumer in mind, it said Tuesday.

The store combines online and offline platforms, including a WeChat store. It also features digital experiences such as a 3D diamond wall, and a “magic mirror” that allows customers to share pieces with friends and family.

The store includes sections dedicated to different product types. The “diamond bar” will feature daily-wear diamond jewelry, while fancy-cut and multi-diamond pieces will be located in the “spectacular diamond” area.

“[Libert’aime] brings together an innovative in-store offering with online and social channels to provide customers with a highly engaging and personalized buying experience,” Forevermark CEO Stephen Lussier said. “We recognize that our consumer continues to evolve and, with Libert’aime by Forevermark, we are thrilled to be offering a diamond-jewelry range that has been designed with a younger, more fashion-forward consumer in mind, who might just be starting their diamond journey.”

The Shanghai store will also feature a new collection, LE LIGHT, designed by popular Chinese actor and musician Timmy Xu Weizhou.

In addition, De Beers Diamond Jewellers has opened a new store in the luxury SKP shopping mall in Xi’an, its sixth in mainland China. The new branch will feature three separate divisions: one for bridal jewelry, a second with collections such as the Talisman, Enchanted Lotus and Dewdrop lines, and a third showcasing high-jewelry pieces.
 
Source: diamonds.net

Credit: Matt Crabb/De Beers

Forevermark Unveils New Concept Store in China

Forevermark has launched a concept store in Shanghai tailored to millennial shopping habits, marking its 1,000th branch in China.

The opening of the store, named Libert’aime, also celebrates the brand’s 10th anniversary of entering the country. The De Beers-owned brand designed the branch’s diamond-jewelry line with a young, self-purchasing consumer in mind, it said Tuesday.

The store combines online and offline platforms, including a WeChat store. It also features digital experiences such as a 3D diamond wall, and a “magic mirror” that allows customers to share pieces with friends and family.

The store includes sections dedicated to different product types. The “diamond bar” will feature daily-wear diamond jewelry, while fancy-cut and multi-diamond pieces will be located in the “spectacular diamond” area.

“[Libert’aime] brings together an innovative in-store offering with online and social channels to provide customers with a highly engaging and personalized buying experience,” Forevermark CEO Stephen Lussier said. “We recognize that our consumer continues to evolve and, with Libert’aime by Forevermark, we are thrilled to be offering a diamond-jewelry range that has been designed with a younger, more fashion-forward consumer in mind, who might just be starting their diamond journey.”

The Shanghai store will also feature a new collection, LE LIGHT, designed by popular Chinese actor and musician Timmy Xu Weizhou.

In addition, De Beers Diamond Jewellers has opened a new store in the luxury SKP shopping mall in Xi’an, its sixth in mainland China. The new branch will feature three separate divisions: one for bridal jewelry, a second with collections such as the Talisman, Enchanted Lotus and Dewdrop lines, and a third showcasing high-jewelry pieces.
 
Source: diamonds.net

Credit: Matt Crabb/De Beers

$42M Expected For Pink Diamond At Christie’s Auction

An Oval Cut Fancy Vivid Pink Diamond  goes under the hammer at the Christie’s Magnificent Jewels sale this month.
The 14.93 carat  Type IIa VVS1 clarity  Oval Diamond, named the Pink Promise is estimated to sell for between $28 million to $42 million USD.

Source: DCLA 

$42M Expected For Pink Diamond At Christie’s Auction

An Oval Cut Fancy Vivid Pink Diamond  goes under the hammer at the Christie’s Magnificent Jewels sale this month.
The 14.93 carat  Type IIa VVS1 clarity  Oval Diamond, named the Pink Promise is estimated to sell for between $28 million to $42 million USD.

Source: DCLA