The acquisition will enhance its European footprint and increase its digital capabilities.
The massive natural fancy black diamond will be offered without reserve at Sotheby’s next month.
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The results came during a record year for the auction house.
The sale totaled nearly $1.9 million.
Lab-grown diamonds are growing in popularity, so be sure you and your staff are prepared to speak to the quality of those you come across.
A patron collected them over four decades.
April Matteini joins with more than 25 years of jewelry appraisal and auction house experience.
The “Medusa” pendant went for $3.7 million at Sotheby’s New York, smashing pre-sale estimates.
A tantalizingly beautiful and carbon-neutral choice, Swarovski Created Diamonds are an extension of the beloved brand’s personality and value.
Sotheby’s “London Treasures” auction featured several other jewels believed to have belonged to the empress.