Cullinan Diamond Collection

The nine Cullinan diamonds were all cleaved from one incredible piece of rough weighing over one pound! The Cullinan diamond was gifted to the King of England, and all stones cut from it—9 major stones and 96 minor ones—have remained the property of the British Crown or the Queen herself. The Stonecutter has mined the diaries of the original gem cutters to authenticate dimensions for the Cullinan diamond collection replicas.

Cullinan Diamond Specifications

Total Diamond Weight 1,168 carats
Total CZ Weight 1,931 carats
Color Colorless
Weight of Rough 3,106 carats
Origin Premier Mine, South Africa
Date Found 1905
Current Location Tower of London; British Crown Jewels


Diamond Weight
Dimensions (in mm)*
Cullinan I 530.2 58.9 x 45.4 x 27.7

Cullinan II 317.4 45.5 x 40.8 x 24.2

Cullinan III 92 39.5 x 26 x 14.75

Cullinan IV 62 26 x 26 x 12.35

Cullinan V 18.38 17 x 18.5 (w) x 7.17

Cullinan VI 11.25 28.5 x 12.0 x 5.74

Cullinan VII 8.56 22 x 11.5 x 5.71

Cullinan VIII 6.63 15 x 10.5 x 5.96

Cullinan IX 4.28 14 x 9 x 5.58

*Weight, length and width dimensions for Cullinan III-IX come from the Asscher diaries, October 1908. Depth dimensions were generated by GemCad modeling.


Cullinan Diamond History

The Cullinan diamond, named for the mine’s chairman, was unearthed from the Premier Mine in South Africa on January 26, 1905. Prime Minister of the Transvaal Colony suggested gifting the diamond to King Edward VII of England, a suggestion that was ratified by majority vote of the colonial government. The king was left with the decision to accept the gift or not, and it was Prime Minister Winston Churchill who is credited with convincing King Edward VII to accept it. (His role in Britain’s acquisition of the diamond was acknowledged by a gift of a replica.)

Transporting the diamond from South Africa to England was quite a production. The stone was reported to have been locked in the captain’s safe on board a steamboat where it was continuously guarded. That stone, however, was a fake. The real Cullinan diamond was shipped to England via parcel post in a plain box and guarded by two Scotland Yard officers on the train to London.

The Cullinan diamond was presented to King Edward VIII on his 66th birthday in the presence of royal guests including the Queens of Norway and Spain. The rough was cut by the Asscher Brothers of Amsterdam into the stone collection that exists today.

Individual Stone and Complete Cullinan Collection

Each of the Cullinan diamonds have been incorporated into ceremonial regalia and jewelry. You can also incorporate replicas of these historic diamonds into your jewelry or personal collection. The Stonecutter offers the highest quality diamond replicas available, and for less than you may imagine. Order individual stones or the entire Cullinan collection online. If you would like to set your replica, please contact us for jeweler recommendations.

Museum-Quality Diamond Replicas by Scott Sucher


For historic information, please visit Museum Diamonds

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