DiamondBuzz
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.
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.
DiamondBuzz
Pandora Adds Carbon Footprint Labelling For LGDs
New Level Of Transparency Empowers Consumers To Compare Climate Impact Of Their Diamond Jewellery
For decades, diamonds have been graded by the traditional 4Cs: Cut, Colour, Clarity and Carat. Now Pandora is adding the 5th C, declaring the carbon footprint of every Pandora Lab-Grown Diamond as part of the product information on pandora.net alongside the traditional four grading criteria.
The carbon footprint covers all emissions from the diamond crafting process: from producing the raw materials used to grow the diamond all the way until it is cut and polished, ready to leave the diamond facility.
As an example, a one carat Pandora Lab-Grown Diamond has 12.58 kg of CO2e emissions. This is around 90% lower than a mined diamond of the same size.
By adding carbon footprint to the diamond conversation, Pandora gives customers an extra point of comparison and essential insight into the climate impact of their desired diamond jewellery.
CARBON FOOTPRINT COMPARABLE TO A PAIR OF JEANS
Lab-grown diamonds are chemically, optically, thermally and physically identical to mined diamonds.
Pandora stopped using mined diamonds in 2021 and is now only using lab-grown diamonds made with 100% renewable electricity and set in jewellery crafted from 100% recycled silver and gold.This significantly reduces the carbon footprint of the Pandora Lab-Grown Diamonds collection. For example, a 14k gold Pandora Infinite ring with a 1 carat lab-grown diamond has a comparable carbon footprint to a pair of jeans.
PANDORA TO SHARE FINDINGS
The carbon footprints of Pandora’s lab-grown diamonds have been calculated by external life-cycle assessment experts and published in a study verified by auditing firm EY. The study uses best practice methodology and is available on pandoragroup.com.
Adding a 5th C is a response to increasing consumer expectations to sustainability, and Pandora will share its methodology and findings with other jewellery makers to inspire greater transparency across the sector.
Pandora Lab-Grown Diamonds are currently available in the US, UK, Canada, Australia, New Zealand and Denmark with more countries to be added soon.
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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.