$58 million Oppenheimer Blue Diamond

The highlight of a Christie’s Geneva sale last May, this 14.62-carat fancy vivid-blue diamond holds the record for the most expensive diamond sold at auction. The stone was unearthed in South Africa near the turn of the 20th century. Its longtime owner, mining magnate Philip Oppenheimer, had it cut and set into a ring for […]

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$58 million Oppenheimer Blue Diamond

The highlight of a Christie’s Geneva sale last May, this 14.62-carat fancy vivid-blue diamond holds the record for the most expensive diamond sold at auction. The stone was unearthed in South Africa near the turn of the 20th century. Its longtime owner, mining magnate Philip Oppenheimer, had it cut and set into a ring for his wife.