Most Expensive Diamonds Ever Sold at Auction

About This Dataset

The highest prices ever paid for a single diamond at public auction, led by the 59.6-carat Pink Star at $71.2 million in 2017. The list is dominated by fancy-coloured pink and blue stones, whose extreme rarity commands the strongest bidding.

✨ AI Insight

The Pink Star ($71.2M) leads by a wide margin - roughly $13M clear of the next tier, where the Williamson Pink Star, Oppenheimer Blue and De Beers Blue cluster tightly at $57.5-57.7M. Colour is the decisive factor: every diamond here is either fancy pink or fancy blue, with no colourless stone making the list, showing that saturated natural colour, not size, drives the very top of the market. The field then steps down through the Winston Pink Legacy ($50.6M), Blue Moon of Josephine ($48.5M) and Graff Pink ($46.2M) before dropping sharply to the Winston Blue ($23.8M), which sold for barely a third of the leader despite its flawless vivid-blue grade.

Source: Wikipedia - Most Expensive Diamonds

Key Findings

Auto-computed highlights from this dataset

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Pink Star (2017) leads with 71 in All Time.

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Average value in All Time: 52 · median: 54.

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Gap in All Time: Pink Star (2017) is 3× larger than Winston Blue (2014).