1. Hope Diamond (not sold) – estimated at $250 million

The Hope Diamond stands as one of the most famous and valuable diamonds in the world. Weighing 45.52 carats, it features a rare deep blue color caused by trace amounts of boron. Although never sold on the modern open market, its estimated value reaches $250 million. Originally from India, the diamond has passed through royal families and collectors over the centuries. Today, it rests in the Smithsonian Institution, where it draws millions of visitors each year. Its mysterious history, striking beauty, and legendary curse only increase its fame and worth.

Image at The Hope Diamond: The History and Science of the Blue Gem

2. Pink Star Diamond (sold in 2017) – $71.2 million

The Pink Star is a 59.60-carat vivid pink diamond that shattered records when it sold for $71.2 million at a Sotheby’s auction in 2017. This flawless gem was mined by De Beers in Africa and later cut and polished over two years. Its exceptional size and purity make it one of the rarest pink diamonds ever discovered. The Hong Kong-based jewelry company Chow Tai Fook purchased it and renamed it the “CTF Pink Star.” Ultimately, its sale price reflects both its unique characteristics and the strong global demand for ultra-rare colored diamonds.

Image at Pink Star diamond sells for $71.2 million, becoming the world’s most expensive gemstone | Arab News

3. Oppenheimer Blue Diamond (sold in 2016) – $57.6 million

The Oppenheimer Blue Diamond weighs 14.62 carats and holds the title of the largest vivid blue diamond ever sold at auction. Named after its previous owner, Sir Philip Oppenheimer, this gem sold for $57.6 million at Christie’s in Geneva in 2016. Its vibrant color, clarity, and rectangular cut helped it reach record-breaking levels. Moreover, the diamond’s connection to the prominent Oppenheimer family added significant historical value. As a result, collectors and connoisseurs recognized it as a once-in-a-generation masterpiece.

Image at Photos: Rare ‘Oppenheimer Blue’ Diamond Sells for Record Price—$57.6 Million | The Epoch Times

4. Pink Legacy (sold in 2018) – $50.3 million

The Pink Legacy is an 18.96-carat vivid pink diamond once owned by the Oppenheimer family. In 2018, it sold at Christie’s for $50.3 million, setting a per-carat price record for pink diamonds at the time. Its perfect cut and extraordinary saturation distinguish it from nearly all other pink diamonds. The stone now belongs to Harry Winston, who renamed it “The Winston Pink Legacy.” Thanks to its pedigree, color, and rarity, it remains one of the most iconic pink diamonds ever brought to market.

Image at Video: Harry Winston jeweller buys ‘Pink Legacy’ diamond for record $50 million – World News

5. Blue Moon of Josephine (sold in 2015) – $48.5 million

This 12.03-carat blue diamond, known as the Blue Moon of Josephine, sold for $48.5 million in 2015 at a Sotheby’s auction in Geneva. Hong Kong billionaire Joseph Lau purchased it for his daughter and named it after her. The diamond boasts a vivid blue hue and was graded internally flawless. Mined in South Africa, it combines top-tier color, clarity, and origin. As one of the finest blue diamonds ever discovered, it represents both elite craftsmanship and deep emotional value for its owner.

Image at Blue Moon Diamond Sells for $48.5 Million at Sotheby’s

6. The Graff Pink (sold in 2010) – $46.2 million

The Graff Pink is a 24.78-carat fancy intense pink diamond that once belonged to celebrity jeweler Harry Winston. In 2010, Laurence Graff acquired it at Sotheby’s for $46.2 million and later enhanced its brilliance through expert recutting. The gem now weighs 23.88 carats and features an emerald cut with a stunning saturation. Moreover, its flawless clarity and rare hue make it one of the finest pink diamonds ever seen. Graff renamed it after himself, underscoring its place in his legendary collection.

Image at Pin på Jewelry to dream about!

7. The Princie Diamond (sold in 2013) – $39.3 million

The Princie Diamond, a 34.65-carat fancy intense pink gem, sold for $39.3 million at Christie’s New York in 2013. Originally discovered over 300 years ago in India’s Golconda mines, the diamond has royal connections and an impressive lineage. It was named after the son of the Maharani of Baroda and boasts a unique orangey-pink hue rarely found in nature. Its exceptional size and noble past helped it attract global interest, ultimately making it one of the most important Golconda diamonds ever auctioned.

Image at Pink diamond sells for $39m: Rare ‘Princie’ sold to anonymous bidder at New York Christie’s auction | Daily Mail Online

8. The orange (sold in 2013) – $35.5 million

Weighing 14.82 carats, The Orange is the largest vivid orange diamond ever sold at auction. In 2013, it fetched $35.5 million at Christie’s Geneva, setting a world record for an orange diamond. Its fiery, saturated color and pear-shaped cut made it a standout in the world of colored gems. Although orange diamonds are among the rarest, The Orange’s size and clarity place it in a league of its own. Its bold appearance and rarity captured the imagination of collectors worldwide.

Image at Orange diamond sells for $35 million. Next up: a $60 million pink diamond – CSMonitor.com

9. The Zoe Diamond (sold in 2014) – $32.6 million

The Zoe Diamond is a 9.75-carat vivid blue diamond that sold for $32.6 million in 2014 at Sotheby’s. Despite its smaller size compared to others on the list, its record-setting per-carat price revealed its exceptional quality. Originally part of Rachel “Bunny” Mellon’s collection, it holds both elegance and history. Its rich blue hue and pear-shaped cut contribute to its timeless appeal. The sale confirmed the growing value of rare, colored diamonds among elite collectors.

Image at The Zoe Diamond – The Most Expensive Diamond in the World (for now) | Naturally Colored

10. The Winston Blue (sold in 2014) – $23.8 million

The Winston Blue is a flawless 13.22-carat vivid blue diamond purchased by Harry Winston in 2014 for $23.8 million. Previously known as “The Blue,” it was renamed to reflect its place in the iconic Harry Winston collection. Its pear shape and internal perfection helped set a record price per carat for a blue diamond at the time. Furthermore, the acquisition reinforced Harry Winston’s reputation for acquiring some of the world’s rarest gemstones.

Image at ‘The Winston Blue’ diamond set a new world auction record

This top list shows the top 10 most expensive diamonds of all time.