DiamondBuzz
Final Sale Of The Season: High Jewelry Auction In New York
Culminates A Global De Beers X Sotheby’s Collaboration Series, Following Hong Kong and Geneva
Sotheby’s and De Beers conclude their 2026 international auction collaboration in New York, following acclaimed presentations and strong results in Hong Kong and Geneva. The final sale presents a tightly curated group of exceptional natural diamonds, reflecting a year defined by rarity, craftsmanship and provenance.
The New York auction marks the culmination of a cross-continental journey, with momentum building at each stage as collectors responded confidently to these exceptional natural diamonds. Here, in New York, diamonds intersect with modern identity, creativity and personal storytelling. Buyers will have the opportunity to acquire two pear-shaped, D-color diamond rings, alongside a magnificent 11.33-carat, old-mine brilliant-cut D-color, Type IIa diamond.
Diamonds are not simply precious objects, but carriers of cultural meaning. Formed billions of years ago, they embody geological history while accruing layers of human narrative—as symbols of love, empowerment and identity. Across each stop from Asia to Europe to the United States, the auctions have highlighted how diamonds continue to evolve as cultural artefacts, shaped by craftsmanship, heritage and contemporary self-expression.
In Hong Kong, diamonds are deeply rooted in traditions of trade, symbolism and philosophy. The sale featured a 3.03-carat pear-shaped diamond ring and a pair of brilliant-cut diamond earrings totaling 4.01 carats. The highlight was the extraordinary De Beers Jwaneng 28.8—a 28.88-carat brilliant-cut, D-color, flawless, Type IIa diamond.
In Geneva, the conversation shifted to connoisseurship and the culture of collecting. Notable stones included a 1.10-carat light pink oval-cut diamond, a 1.06-carat very light pink diamond, and a perfectly matched pair of brilliant-round diamonds, each weighing 18.38 carats—one D-color, flawless, and the other internally flawless.
This evolving cultural lens is mirrored in shifting patterns of ownership. Increasingly, collectors are acquiring diamonds not only as adornment or investment, but as expressions of individuality. Nearly half of global diamond purchases are now made by women for themselves, signalling a broader redefinition of value—rooted in independence, self-purchase and personal significance.
To further extend the impact of the auctions, Peace Parks will receive part of the proceeds, highlighting how natural diamonds can help contribute meaningfully to the landscapes and communities from which they originate.
As the season closes, diamonds continue to bridge deep history and contemporary culture, reaffirming their place as natural masterpieces and enduring symbols.
DiamondBuzz
Exceptional Platinum Jewelry Designs Win AGTA Spectrum Awards Competition
More than 60 platinum jewellery entries competed for top honours, recognising exceptional craftsmanship, innovative designs and the versatility of platinum across coloured gemstones and pearl jewellery.
Platinum Guild International (PGI), in partnership with the American Gem Trade Association (AGTA), is pleased to announce the Platinum Honors winners of the 2026 AGTA Spectrum Awards.
More than 60 platinum jewelry entries were submitted to the Platinum Honors category, which recognizes outstanding uses of platinum in colored gemstone and natural or cultured pearl jewelry across multiple categories, from Evening Wear to Engagement Rings. PGI also traditionally presents an award for Best Use of Platinum and Color.
The AGTA Spectrum Awards competition was held at the Omni Frisco Hotel at the Star in Dallas, where Jenny Luker, President, PGI USA, judged the Platinum Honors category.
“The AGTA Spectrum Awards bring together an extraordinary range of platinum jewelry, and the level of design innovation, technical execution, and artistry is exceptional,” said Luker. “It’s exciting to see so many talented designers exploring the material in different ways, creating intricate, distinctive pieces that showcase the versatility of platinum.”
AGTA CEO John W. Ford Sr. thanked PGI for its sponsorship of the Spectrum Awards and extended his congratulations to the Platinum Honors winners. “Receiving a Platinum Honors distinction from PGI is one of the industry’s highest achievements,” he said. “We were happy to see Platinum so well represented among the AGTA Spectrum entries, which increased by 21% this year.”
Platinum’s potential for design innovation and technical accomplishment was exemplified by several of this year’s AGTA Spectrum Award winners.
The Best of Show award and 1st Place in Classical Wear was awarded to “Can’t Look Away,” a necklace by Lezlie Slavens of Luxe Fine Jewelry and collaborators. The design features a carved Paraiba tourmaline backed in platinum, suspended from a diamond-accented platinum chain and illuminated by a magnet-activated LED light source.
The Art Deco-inspired “Horus Egyptian Revival” bracelet by Joseph Dardashti, in Platinum with Rubies, Sapphires, Emeralds, Diamonds, and Onyx, won 1st Place in the Spectrum Awards’ Evening Wear category and also received a Platinum Honors distinction in the same category.
Jeffrey Bilgore’s Mahenge Spinel and Diamond “Neuvelle Moi et Toi Forever” Platinum ring received the Stuller Color of the Year Award, a new category honoring exceptional interpretations of Stuller’s “Signature Red”, and won 2nd Place in the Spectrum Awards’ Classical category.
The honour of 1st Place in the Bridal category went to Niveet Nagpal of Omi Gems, Inc. for his Platinum ring featuring a 5.32 ct. Paraiba Tourmaline, accented by Tourmaline (1.05 ctw.) and Diamonds (0.69 ctw.).
New entrant Shelby Lichtenstein was awarded 1st Place in Engagement Rings with her Platinum “Something New, Something Blue” ring, featuring a 4.50 ct. blue emerald-cut Zircon accented by Diamonds (0.26 ctw.).
“Because of platinum’s durability, strength, and tensile properties, designers can achieve things that might not be possible with other metals,” said Luker. “Whether it’s intricate micro pavé work or delicate prongs, platinum allows for exceptional precision while ensuring that gemstones remain secure.”
Across all categories of the Spectrum Awards competition, noteworthy platinum jewelry trends included bezel settings in engagement rings, designs that paired platinum with moonstones for a dreamy, elegant white-on-white effect, and brooches for both men and women that incorporated multiple gemstone types in an array of cuts and sizes.
“The level of design this year was incredible,” said Luker. “I was particularly impressed by the innovation and execution. Platinum plays such a wonderful supporting role to gemstones, and that relationship has endured—and will endure—forever.”
AGTA Spectrum – Platinum Guild International (PGI) Platinum Honors
Best Use of Platinum & Color
Roland Krainz, Krainz Creations – Platinum “Ambrosia” necklace featuring Opals accented by Diamonds, Emeralds, Sapphires, and tsavorite Garnets (140.80 ctw.).
Best Use of Platinum Crown
Ricardo Basta, E. Eichberg, Inc. – Platinum “Everest” ring featuring a 9.70 ct. cushion-cut Tanzanite accented by Diamonds (1.67 ctw.).
Bridal Wear
Jeffrey Bilgore, Jeffrey Bilgore, LLC – Platinum “JuneStones for June Brides” necklace featuring a 27.02 ct. blue-sheen oval Moonstone accented by a 7.95 ct. natural conch Pearl, Alexandrites (3.23 ctw.), and Diamonds (10.36 ctw.).
Business/Day Wear
Gabriel Angulo, Pompos Jewelry Corporation – Platinum stretchable ring with titanium springs featuring a 5.42 ct. natural oval cabochon black Opal accented by Diamonds (5.15 ctw.) and Sapphires (3.28 ctw.).
Classical
Eve Streicker, Original Eve Designs, in collaboration with Rohan Agrawal – Platinum “Zellige” brooch featuring marquise-shaped Aquamarines (8.40 ctw.) accented by Diamonds (0.28 ctw.).
Engagement Rings
Underwood Design Team, Underwood’s Fine Jewelers – Platinum ring featuring a 3.66 ct. cushion-shaped Sapphire accented by Diamonds (1.22 ctw.).
Evening Wear
Joseph Dardashti, Joseph Dardashti, Ltd. – Platinum and 18K yellow gold “Horus Egyptian Revival” bracelet featuring Rubies (5.90 ctw.), blue Sapphires (3.75 ctw.), and Emeralds (0.70 ctw.) accented by Diamonds (6.50 ctw.) and Onyx (0.75 ctw.).
Innovative Design
Cari Goldman, Pieces by Cari, LLC, in collaboration with Alexsey Yarnikh – Platinum “Love Spun” ring featuring marquise crystal Opals (2.24 ctw.) accented by Diamonds (1.0 ctw.).
Men’s Wear
Ricardo Basta, E. Eichberg, Inc. – Platinum “Siren’s Relic” ring featuring a 5.35 ct. emerald-cut Zoisite.
These highlights offer a glimpse of the exceptional work recognized in the 2026 AGTA Spectrum & Cutting Edge Awards. We invite you to explore the complete collection of winning entries at AGTA.org and discover the artistry behind each award.
Many of the winning pieces will be on display during AGTA GemFair Tucson, January 31–February 4, 2027, at the Tucson Convention Center. For AGTA members and the wider trade, it is an opportunity to appreciate the gems and craftsmanship up close, connect with the community behind them and find inspiration for what comes next.
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JewelBuzz is Asia’s First Digital Jewellery Media & India’s No.1 B2B Jewellery Magazine, published by AM Media House. Since 2016, we’ve been the trusted source for jewellery news, market trends, trade insights, exhibitions, podcasts, and brand stories, connecting jewellers, retailers, and industry professionals worldwide.