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Christie’s To Present 5.5 cts “Ocean Dream” At Geneva Magnificent Jewels Sale, Expected To Achieve Up To USD 12.8 Million

Ocean Dream, The Largest Known Fancy Vivid Blue-Green Diamond In Existence, Classified As A Rare Type LLA STONE.

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Christie’s has announced the upcoming offering of the Ocean Dream, the largest known fancy vivid blue-green diamond in existence, at its prestigious Magnificent Jewels auction in Geneva in May 2026. The extraordinary gemstone is expected to achieve up to CHF 10 million (approximately USD 12.8 million).

Weighing 5.50 carats, the triangular-cut diamond is graded fancy vivid blue-green, SI1 clarity, and classified as a rare Type IIa stone. The gem is set in a ring featuring an intricate mount adorned with sculpted rock crystal, alongside round and pink diamonds, underscoring its exceptional craftsmanship and design.

Certified by the Gemological Institute of America, the Ocean Dream holds the distinction of being the largest vivid blue-green diamond ever graded by the institute. The polished gem originated from an 11.70-carat rough discovered in Central Africa, further enhancing its provenance and rarity.

This marks only the second time the Ocean Dream has been presented at auction. It was previously sold by Christie’s in Geneva in May 2014, achieving CHF 7.8 million (approximately USD 8.7 million at the time), and has since remained in a single private collection for over a decade.

The diamond’s legacy is further enriched by its inclusion in the renowned “Splendor of Diamonds” exhibition at the Smithsonian Institution National Museum of Natural History in 2003, where it was recognized as one of the world’s most exceptional diamonds.

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DiamondBuzz

Botswana Looks Beyond Rough Diamond Sales, Eyes U.S. Jewelry Market

The Duty Exemption By US Presents An Opportunity For Domestic Jewelry Manufacturers In Gaborone To Bypass Traditional Middle-Market Hubs and Establish A Direct Pipeline To American Consumers

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Grappling with a painful downturn in global rough-diamond demand, Botswana is pivoting its economic strategy: expanding up the supply chain directly into American retail shelves while leveraging its resource wealth to fund conservation and diversification.

Speaking on the sidelines of New York Climate Week, Bogolo Joy Kenewendo, Botswana’s Minister of Minerals and Energy, highlighted the southern African nation’s plan to capitalize on a 0% import-tariff rate to the U.S. market. The duty exemption presents an opportunity for domestic jewelry manufacturers in Gaborone to bypass traditional middle-market hubs and establish a direct pipeline to American consumers.

shift The push into value-added manufacturing comes as the world’s top diamond producer by value navigates a broader structural Diamond revenues have long formed the bedrock of Botswana’s post-independence balance sheet, underwriting universal secondary education and tuition-free university funding. However, recent market volatility has underscored the vulnerabilities of a mono-sectoral economy.

Under the Botswana Economic Transformation Programme (BETP)—an initiative spearheaded directly by President Duma Boko and his vice president—the government is directing resources toward manufacturing, agriculture, and broader mining sectors to reduce its heavy reliance on rough diamond sales.

To support its luxury exports, Botswana is recalibrating its brand narrative around origin, environmental stewardship, and social impact. The country recently announced a five-year extension of the “Okavango Eternal” partnership alongside De Beers Group and the National Geographic Society. The initiative aims to protect the ecological integrity of the Okavango River Basin while tying diamond purchases to conservation efforts.

With De Beers currently facing an impending ownership change, officials remain optimistic that any capital restructuring could bring additional funds into Botswana to accelerate its domestic economic transition.

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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.

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