The Cullinan Diamond

The Largest & Most Expensive Diamond In The World

It’s no surprise that diamonds are some of the most expensive gemstones on Earth, however, there’s always a “best of the best.” The Cullinan Diamond is the largest, heaviest, and most expensive diamond ever discovered.

History & Discovery

The Cullinan Diamond was first discovered on January 25, 1905 at the Premier Mine in Pretoria, South Africa. Miner Frederick Wells found the diamond 18 feet below the surface and presented it to the owner of the mine, Thomas Cullinan. The diamond was named after Thomas, hence the name “Cullinan Diamond.”

Frederick Wells with the Culiinan Diamond

Diamond Size & Value

To this day, The Cullinan is the heaviest, largest and most expensive diamond in Earth’s history. It was first bought in 1907 by the Transvaal Colony government for  £ 150,000. It weighs in at a whopping 3,106.75 carats and is currently valued at $400 million.

Frederick Wells holding the Cullinan Diamond circa 1905

The Cullinan Diamond Cuts

The Cullinan Diamond was eventually cut into 9 different diamonds named Cullanin I-IX. All of the stones were kept in Amsterdam except for Cullinan I & II. The first two Cullinan Diamonds were presented to Queen Mary and were passed down to Queen Elizabeth II. Queen Elizabeth II is the current owner of all nine Cullinan diamond cuts.

Queen Mary wearing the Cullinan Diamonds