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Breaking Record: The 5.50-Carat "Ocean Dream" Fancy Vivid Blue-Green Diamond Sold for ¥117 Million

2026-05-18

On May 14, 2026, Christie’s Geneva Magnificent Jewels auction witnessed a historic milestone in the colored diamond market. The iconic Ocean Dream Diamond, a rare 5.50-carat Fancy Vivid Blue-Green diamond, was hammered down at 13.5675 million Swiss francs (approximately 117 million RMB). It officially set a new world auction record for blue-green diamonds, once again proving the enduring collection value of top-grade fancy colored diamonds in the global luxury jewellery market.

Recognized by GIA (Gemological Institute of America) as a "unicorn-level" rare gemstone, the Ocean Dream boasts impeccable comprehensive parameters, making it one of the most outstanding colored diamonds in the world.

边框表格布局
Diamond Name	The Ocean Dream
Carat Weight	5.50 carats
Color Grade	Fancy Vivid Blue-Green
Clarity Grade	IF (Internally Flawless)
Cut	Triangular Modified Brilliant Cut
Diamond Type	Type IIa (The purest diamond type in nature)
Certificate	Official GIA Grading Certificate
Auction Date & Venue	May 14, 2026, Christie’s Geneva
Final Transaction Price	13.5675 million CHF (≈17.36 million USD / 117 million RMB)
Buyer	Anonymous private high-net-worth collector

Breaking Record: The 5.50-Carat Ocean Dream Fancy Vivid Blue-Green Diamond Sold for ¥117 Million 2

Breaking Record: The 5.50-Carat Ocean Dream Fancy Vivid Blue-Green Diamond Sold for ¥117 Million 3

Diamond detail shots captured under different lighting conditions, showcasing exceptional color transparency and brilliance.

Mined in Central Africa in the 1990s, the rough stone of the Ocean Dream weighed 11.17 carats. After sophisticated manual cutting and polishing, it retained the perfect color saturation and flawless clarity, achieving an almost perfect cutting presentation.

Why Is The Ocean Dream Called A "Unicorn Diamond"?

1. Unique Natural Color Formation

Different from ordinary blue diamonds colored by boron elements, the blue-green tone of the Ocean Dream is formed by natural long-term gamma ray and neutron radiation deep underground. It is an extremely rare geological miracle. The diamond presents a balanced and highly saturated blue-green hue with uniform color distribution throughout the gemstone, no surface color stacking, and excellent color penetration.

2. Extremely Rare Global Reserves

According to GIA official statistical data, there are no more than 8 natural Fancy Vivid Blue-Green diamonds in the world. Among them, the Ocean Dream is the only one weighing more than 5 carats, belonging to a unique solitary stone. For intuitive reference, the quantity of blue-green diamonds is far rarer than popular colored diamonds:

Fancy Vivid Yellow Diamonds: Over 1,000 pieces worldwide

Fancy Vivid Blue Diamonds: About 500 pieces worldwide

Fancy Vivid Pink Diamonds: About 400 pieces worldwide

Fancy Vivid Green Diamonds: About 200 pieces worldwide

Fancy Vivid Blue-Green Diamonds: Only 8 pieces worldwide

3. Top-tier Superimposed Parameters

This diamond integrates Fancy Vivid intense color, IF flawless clarity, Type IIa pure diamond quality and ideal cutting. Such a combination of top parameters is almost non-replicable in nature, which lays an unshakable foundation for its high collection value.

Why Is The Ocean Dream Called A "Unicorn Diamond"?

1. Unique Natural Color Formation

2. Extremely Rare Global Reserves

Fancy Vivid Yellow Diamonds: Over 1,000 pieces worldwide

Fancy Vivid Blue Diamonds: About 500 pieces worldwide

Fancy Vivid Pink Diamonds: About 400 pieces worldwide

Fancy Vivid Green Diamonds: About 200 pieces worldwide

Fancy Vivid Blue-Green Diamonds: Only 8 pieces worldwide

3. Top-tier Superimposed Parameters

Historical Provenance: A Legendary Diamond With Century-old Heritage

The Ocean Dream has a prestigious collection history and has long been included in the ranks of the world's top famous diamonds.

In 2003, it debuted at the Smithsonian Institution’s The Splendor of Diamonds special exhibition, displayed alongside world-famous diamonds such as the De Beers Millennium Star and the Steinmetz Pink Diamond, establishing its legendary status in the gem industry.

In May 2014, the Ocean Dream was auctioned at Christie’s Geneva for the first time, with a transaction price of 7.781 million Swiss francs, setting the industry record at that time. After 12 years of collection and circulation, its market value increased by 74%, with a single carat value as high as 2.467 million US dollars.

Industry Market Analysis: The Rising Boom of High-end Colored Diamonds

The record-breaking transaction of the Ocean Dream is not an accidental case, but a clear signal of the global high-end jewellery market trend. In the context of global economic volatility, high-net-worth individuals are increasingly inclined to allocate unique natural colored diamonds as hard currency for value preservation and appreciation.

Different from mass-produced gold jewellery, top-level solitary colored diamonds have scarce resource attributes and irreproducible natural characteristics. Their market prices have maintained a steady upward trend in the past decade with low market fluctuation risks. At present, blue diamonds, pink diamonds and rare blue-green diamonds have become the key layout tracks of international luxury jewellery brands and private collectors.

Conclusion

As the largest and highest-grade Fancy Vivid Blue-Green diamond certified by GIA, the Ocean Dream has rewritten the global auction history of blue-green diamonds again. It not only showcases the extreme beauty of natural rare gemstones, but also verifies the strong anti-risk and appreciation capabilities of top coloured diamonds in the luxury investment market.

In the future, with the continuous depletion of high-quality diamond rough resources, rare colored diamonds with complete provenance and top parameters will continue to maintain high market premiums, becoming the core collection of the global high-end jewellery market.

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