Most Expensive Diamond in the World.

10 Most Expensive Diamonds in the World

Most Expensive Diamond in the World.

The world of diamonds is a mesmerizing one, with its glimmering beauty and immense value. But among the many dazzling diamonds out there, some stand out for their extraordinary price tags. In this blog, we’ll take a closer look at the 10 most expensive diamonds in the world.


Kohinoor is most expensive diamonds
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The Kohinoor diamond is one of the most expensive diamonds ever known. Contrary to popular belief, this magnificent gem is known to be mined from India. Now weighing a stunning 105.6 carats, it captivates the eyes and leaves us in awe. The name translates to ‘Mountain of Light’ in Persian and has been owned by many royal families. 

At present, the diamond sits in the Tower of London and remains one of the most impressive gems in existence. Its sheer size makes it truly unique and continues to fascinate people around the world. Undoubtedly, the Kohinoor stands unparalleled, radiating its brilliance unlike any other.

The Cullinan Diamond

The Cullinan Diamond
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The Cullinan Diamond is one of the most expensive diamonds in the world, weighing a whopping 3,106.75 carats. It was discovered in South Africa in 1905, and this diamond is valued at hundreds of millions of dollars. The original piece of the gem was meticulously divided into nine distinct stones, which now form a part of the esteemed collection known as the British Crown Jewels. 
The most significant piece of the diamond, known as ‘The Star of Africa,’ weighs 530.2 carats and is mounted on top of the Sovereign’s Sceptre with Cross. This makes it one of the most valuable diamonds still around today, and its story has been an inspiration to many over more than a century since its remarkable discovery.

De Beers Centenary Diamond

De Beers Centenary Diamond
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The De Beers Centenary Diamond is an ideal specific of luxury and extravagance. This exceptional diamond was created by the world-renowned jeweler, De Beers, to commemorate their 100th anniversary. De Beers Centenary diamond, weighing in at 273.85 carats, is the largest flawless diamond ever graded as a D colorless (the highest quality rating for diamonds).

It is considered one of the most elite diamonds in the world, and its estimated worth is around $100 million. With its exquisite shape resembling a pear cut, it truly is a sight to behold. If you ever find yourself possessing this impressive diamond, you can be sure that you have acquired a piece of history!

Graff Lesedi La Rona

Graff Lesedi La Rona Diamond
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It was fondly named as ‘Lesedi La Rona,’ which means ‘Our Light’ in Setswana. The Graff Lesedi La Rona is one of the largest rough diamonds ever discovered, with 1,109 carats! It was unearthed in a Botswana mine in 2015 and has since become one of the most expensive diamonds in the world. 

This elite diamond has served as a muse for jewelry designers globally. It graced the auction stage in 2017 but found its rightful place within the Graff collection. It’s a one-of-a-kind gem!

The Pink Star Diamond

The Pink Star is most expensive diamonds
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The Pink Star Diamond, a rare gemstone weighing 59.6-carat, is the world’s most expensive diamond ever sold. It was cut and polished from a 132.5-carat rough diamond discovered in Africa in 1999. 

In 2017, the Pink Star Diamond fetched a staggering $83 million at an auction, captivating diamond enthusiasts and collectors alike with its incomparable beauty. This iconic gemstone is a mere ideal of exquisite craftsmanship and is destined to leave a lasting impression in the world of precious stones.


Debswana is most expensive diamonds
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In April 2019, Debswana made headlines for discovering a remarkable diamond – a 1,098-carat gem that ranks as the world’s fifth-largest ever discovered! This exceptional find occurred at the Karowe mine in Botswana, where only a select few diamonds surpassing 1,000 carats have ever been recovered. 

Debswana, a joint venture between the Government of Botswana and De Beers, a renowned diamond company, was the driving force behind this momentous discovery. As we marvel at this remarkable find, we are reminded that the Earth still holds many precious gems waiting to be unearthed!

Star of Sierra Leone

Star of Sierra Leone is most expensive diamonds
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The Star of Sierra Leone is an incredible 968.9-carat diamond discovered in 1972, being one of the largest diamonds ever found. A Debswana employee found it at the alluvial mine in Sierra Leone. The diamond, currently in possession of a private collector, holds an estimated value in the millions.

It’s astonishing to fathom how a diminutive object could bear such a luxurious price tag! Its rarity and size render it an exceptional gem, the Star of Sierra Leone, destined to endure for eternity. Truly remarkable, this jewel shall forever be engraved in history as one of the world’s most awe-inspiring gemstones.

Excelsior Diamond

Excelsior Diamond
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The Excelsior Diamond is a dazzling 995.2-carat diamond, considered one of the largest diamonds ever discovered. Found in 1893 in the Jagersfontein Mine in South Africa, it was cut into 21 different gems and sold to jewelers around the world. The main stone, called Excelsior, weighed an impressive 303.75 carats and remained the largest diamond cut from the original stone. 

The Excelsior Diamond is an exquisite reminder of how beautiful and valuable diamonds can be. It has since become a symbol of wealth and luxury, as well as an example of the wonders that nature can create.


Constellation is most expensive diamonds
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The largest diamond cut from the Constellation 813-carat was an oval-shaped stone weighing nearly 100 carats. This remarkable diamond has been named the Constellation Star of Botswana and is considered to be one of the world’s most exquisite gems. 

Its beauty and rarity make it a highly sought-after diamond for jewelers, collectors, and investors. The Constellation 813-carat diamond is a stunning example of the beauty and mystique of diamonds.

The Regent Diamond

The Regent Diamond
Image source: naturaldiamonds

The Regent Diamond is one of the most popular diamonds in the world. It was discovered in India and purchased by Thomas Pitt, the Governor-General of Bengal, in 1701. It weighs an impressive 140.64 carats and has a beautiful pear shape.

The diamond is cherished for its intense blue color, making it stand out from other diamonds. Its royal color is attributed to the presence of boron in its crystal structure. The Regent Diamond is a remarkable gem that will continue to leave people in awe for generations.


Diamonds are exquisite gemstones that boast immense value and are associated with a significant price tag. From the legendary Kohinoor to the renowned Cullinan Diamond, these rare and highly sought-after gems constitute some of the world’s most expensive treasures. While quantifying their value may be challenging, one thing is certain: diamonds will forever symbolize prosperity and luxury.

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