- The 5.5‑carat triangular “Ocean Dream” fancy vivid blue‑green diamond sold at Christie’s Geneva for 13.5M Swiss francs (~$17.3M), a record for its type and about double what it fetched in 2014.
- Found in Central Africa in the 1990s and once shown at the Smithsonian, the gem drew intense interest and sold in roughly 20 minutes to an anonymous private buyer.
- Collectors are increasingly chasing rare colored diamonds — Sotheby’s recently failed to sell a 6‑carat vivid blue at auction but says it’s in talks with interested parties.
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