DiamondBuzz
Christie’s present The Golconda Blue:the largest fancy vivid blue diamond offered at auction

Christie’s is proud to present The Golconda Blue—the largest Fancy Vivid Blue Diamond ever to be offered at auction. Weighing an extraordinary 23.24 carats, this superb historic gemstone will headline Christie’s Magnificent Jewels sale, taking place live on 14 May 2025 at the Four Seasons Hotel des Bergues in Geneva, with an estimate of $35 – 50 million. The Golconda Blue, perfectly mounted in a ring by JAR, is a true masterpiece with its recently uncovered royal provenance, mesmerizing colour, and sensational size. It ranks among the rarest and most important diamonds ever discovered throughout history.
This exceptional pear-shaped Golconda diamond boasts a remarkable provenance rooted in Indian Royalty. Yeshwant Rao Holkar, the Maharaja of Indore and a member of the Holkar dynasty, was known—alongside his wife—for a lifestyle defined by elegance and cosmopolitan sophistication in the 1920s and ’30s. A Knight of the Order of the Indian Empire, the Maharaja spent much of his time abroad, cultivating a strong affinity for Western art, design, and jewellery.
In 1913, his father acquired the famed Indore Pear diamonds from Chaumet, marking the beginning of a long-standing relationship with the historic Parisian Maison. In 1923, during another visit to Chaumet, he commissioned a diamond bracelet set with his own 23-carat pear-shaped Golconda blue diamond.
Drawn to the firm’s avant-garde flare, Yeshwant Rao Holkar appointed Mauboussin as his official jeweler in 1933. Thereafter, Mauboussin reimagined much of the Maharaja’s collection and created the exceptional necklace including the Golconda Blue and the Indore Pears, worn by the Maharani of Indore memorialized in a portrait by Bernard Boutet de Monvel (illustrated on top of release).
Yeshwant Rao Holkar also collaborated with other iconic jewelers, including Harry Winston. In 1946, Mr. Winston purchased the Indore Pears from the Maharaja, and the following year, in January 1947, he acquired this 23-carat blue diamond. Winston later set it in a brooch alongside a matching 23-carat white diamond, which he sold to the Maharaja of Baroda. The brooch was subsequently reacquired by Mr. Winston and resold as a newly designed jewel to its current owner.
Now, over a century later, this legendary blue diamond comes to auction for the very first time, set as a striking contemporary ring by the celebrated Parisian designer JAR.
The legacy of Golconda diamonds begins with a reference found in a 4th-century Sanskrit manuscript. In 327 BC, Alexander the Great brought diamonds from India to Europe, sparking the West’s enduring fascination with these rare gems. By 1292 AD, Marco Polo famously chronicled the captivating beauty of Indian diamonds in his travel writings. Today, The Golconda Blue stands not only as a natural marvel but also as a storied jewel—its provenance bridging continents, dynasties, and centuries.

DiamondBuzz
Zen Diamond Unveils the Soirée Collection: Where Modern Gold Meets Italian Artistry

Zen Diamond, the internationally acclaimed fine jewellery brand, introduces The Soirée Collection — a bold and elegant line of contemporary gold jewellery that blends modern design with the finesse of Italian craftsmanship. Each piece in the collection is thoughtfully designed to elevate evening wear, offering a seamless balance of sophistication and standout style.
Crafted in polished gold and accentuated with exquisite detailing, The Soirée Collection brings together sculptural forms, refined silhouettes, and signature touches that celebrate quiet luxury. From intimate dinners to formal galas, the pieces are designed to make a lasting impression.
A standout piece is the coiled gold bracelet, gracefully encircling the wrist with fluid form and diamond-accented ends, shaped in marquise and round motifs. Inside, Zen’s hidden signature diamond adds a discreet mark of excellence.






The wind chime-inspired necklace features a cascade of layered gold bars anchored by a diamond-set central bar and a sapphire clasp, marrying movement and colour in harmonious rhythm.
Another highlight, a sculptural necklace with a twin-arc design, is crafted in warm gold and finished with a diamond-studded bar at the center, embodying strength and elegance.
Sculptural rings in the collection embrace open-ended forms — one featuring a diamond-set square and arrow motif for a bold contrast, while another showcases closely set pavé diamonds at either end, creating a radiant and modern silhouette.
Completing the collection are refined earrings shaped in an elongated marquise form, enhanced by a rhythmic pattern of alternating diamonds along the inner curve. An iris-inspired stud adds a poetic finish, reflecting Zen Diamond’s commitment to detail and artistry.
With The Soirée Collection, Zen Diamond redefines contemporary glamour — infusing timeless gold with modern edge and impeccable craftsmanship.
DiamondBuzz
AfDB approves $304 million loan to Botswana

The African Development Bank (AfDB) has approved a $304 million loan to support Botswana’s efforts to stabilise its public finances and implement key economic and governance reforms amid falling diamond revenues.
It marks a critical intervention in the country’s ongoing struggle with fiscal instability, primarily driven by a sharp decline in diamond revenues. This analysis examines the context, intent, and expected impact of the loan, as well as the broader economic challenges facing Botswana.
The loan aims to help Botswana navigate a widening fiscal deficit—expected to hit 6.7% of GDP this year—after the economy shrank by 1.7% in 2024, largely due to subdued global demand for diamonds, which account for around 80% of the country’s exports.
The $304 million loan is structured as a one-year general budget support operation for the 2025/26 fiscal year, under the Governance and Economic Resilience Support Programme (GERSP). The program is designed to address two main objectives:
Strengthening fiscal sustainability and transparency: Measures include boosting domestic revenue collection, curbing illicit financial flows, and enhancing the efficiency and accountability of public spending.
Stimulating inclusive economic growth: The program supports micro, small, and medium enterprises (MSMEs), with a particular focus on businesses owned by women and youth, to foster job creation and reduce inequality.
DiamondBuzz
Surat diamond manufacturers implement summer shutdowns on lower demand

Diamond manufacturers in Surat, India’s diamond polishing hub, have begun implementing summer shutdowns for the first time in years as demand for natural stones remains persistently weak and the threat of steep U.S. tariffs looms over the industry.
Traditionally, factories in Surat—home to nearly 4,000 diamond units—take their main annual break during Diwali, remaining operational through the summer months. However, the ongoing downturn has prompted many units to extend Diwali closures and introduce unpaid summer breaks, a move not seen in previous years.
Around 10% of Surat’s diamond factories have declared a summer holiday of at least 15 days, with some major units planning to stay shut until June 6, according to industry sources and local media reports. The closures have triggered an exodus of thousands of migrant workers, many of whom are returning to their hometowns in Saurashtra and North Gujarat as operations wind down.
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