International News
Historic Mughal Emerald Jewels to Lead Christie’s Magnificent Jewels Auction in New York
Over 2,000 carats of rare Mughal-era emeralds and multi-gem treasures — including a 470-carat centerpiece — headline a landmark sale alongside prestigious pieces from Anne Bass and Lucille Coleman collections.
Christie’s will showcase an extraordinary array of Mughal jewels at its upcoming Magnificent Jewels auction in New York on June 17, led by a remarkable carved emerald necklace bearing over 1,150 carats of Colombian emeralds. The historic piece is inscribed with the name Ahmad Shah Durrani, founder of the Durrani Empire, and features a massive 470-carat central emerald. Dating back to 1612, this jewel is steeped in royal heritage and has been linked in historical records with other legendary gems such as the Timur Ruby and the Koh-i-Noor diamond. It carries a pre-sale estimate of up to $3 million.
Two additional Mughal masterpieces will also feature in the sale. One is a multi-gem necklace set with four Colombian emeralds totaling nearly 800 carats, expected to fetch up to $3 million. The other is a remarkable necklace strung with over 2,000 carats of spinel and natural pearls, with eight stones engraved with the names of influential rulers including Delhi Sultan Muhammad ibn Tughluq, Mughal emperors Babur, Jahangir, and Shah Jahan. That piece is estimated to sell for as much as $2 million.
These jewels will be presented alongside the personal collection of philanthropist Anne Hendricks Bass, which includes 26 pieces from esteemed design houses such as Van Cleef & Arpels, Bulgari, Cartier, and JAR. A standout from this collection is a pair of Van Cleef & Arpels diamond pendant earrings, estimated at up to $1.8 million, and a JAR sapphire, emerald, and diamond necklace, valued at up to $300,000.
Also featured in the auction is a group of nine Van Cleef & Arpels Mystery-Set jewels from the collection of philanthropist Lucille Coleman, described by Christie’s as a “significant” highlight of the sale.
With its blend of historical depth and iconic 20th-century design, the June auction promises to be one of the most compelling jewelry events of the year.
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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