Most Expensive Diamonds and Gemstones Sold at Auction (All Time)

About This Dataset

Precious stones ranked by hammer price at public auction in millions of USD. Blue and pink diamonds consistently command the world's highest prices per carat at auction, driven by extraordinary scarcity — gem-quality blue diamonds represent less than 0.001% of all mined diamonds, making each major specimen a genuinely unique object that major auction houses treat as a once-in-a-generation event.

✨ AI Insight

The stark contrast in auction prices among these gemstones underscores the extreme rarity and desirability of colored diamonds, particularly pink and blue varieties. The CTF Pink Star Diamond's record price of $71.2 million not only sets it apart from the competition but also reflects a growing trend in luxury investments where unique, high-quality gemstones are seen as valuable assets. The gap between the top five entries, all exceeding $46 million, and the Wittelsbach-Graff Diamond at $24.3 million illustrates the premium placed on exceptional color and clarity. This trend suggests that as wealth concentration increases, so does the market for these extraordinary gems, driven by collectors and investors alike.

Source: Wikipedia

Key Findings

Auto-computed highlights from this dataset

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CTF Pink Star Diamond leads with 71 in 2022.

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Average value in 2022: 50 · median: 50.

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2017 recorded the highest combined total across all categories.

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Gap in 2022: CTF Pink Star Diamond is 3× larger than Winston Blue Diamond.

Most Expensive Diamonds and Gemstones Sold at Auction (All Time)

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Data Insights Below

Data Insights

Numbers, trends & sources behind this chart

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Data Points

8 categories · 8 years

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Top Value

71.20

CTF Pink Star Diamond

Auction Price (Million USD) · 2017

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Metrics

Auction Price (Million USD)

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Period

2008 – 2022

8 years of data

Rankings & Full Data

8 records · Auction Price (Million USD) · ranked by 2022

✓ 8 sourced

#	Category	2008	2010	2014	2015	2016	2017	2018	2022	Change
🥇	CTF Pink Star Diamond	—	—	—	—	—	71.20	—	—	—
🥈	Oppenheimer Blue Diamond	—	—	—	—	57.50	—	—	—	—
🥉	Pink Legacy Diamond	—	—	—	—	—	—	50	—	—
4	Williamson Pink Star Diamond	—	—	—	—	—	—	—	49.90	—
5	Blue Moon of Josephine Diamond	—	—	—	48.40	—	—	—	—	—
6	Graff Pink Diamond	—	46.20	—	—	—	—	—	—	—
7	Wittelsbach-Graff Diamond	24.30	—	—	—	—	—	—	—	—
8	Winston Blue Diamond	—	—	23.80	—	—	—	—	—	—