About Cullinan

The world's main source for rare blue diamonds

Cullinan Diamond Mine, originally owned by Sir Thomas Cullinan in 1903, has given the world some of the most remarkable stones ever discovered.

Located in the Victorian town named after it's most famous resident, Cullinan is a breathtaking 45-minute drive from South Africa's capital, Pretoria, and an hour-and-a-half from the City of Gold, Johannesburg. The famous mine is the world's main source for rare blue diamonds.

The Cullinan Diamond Mine

Owned by a three way partnership consortium, lead by London-listed group Petra Diamonds, black economic empowerment group Thembinkosi Mining Investments and Saudi-based investment company Al Rajhi Holdings, the Cullinan Diamond Mine is expected to produce one million carats per year over the next 20 to 40 years.

Our accreditations and associations

Historically, Cullinan Diamond Mine has generated 25% of the worlds diamonds over 400 carats. This famous landmark is the source of the most famous diamond ever unearthed – the 3 106 carat Cullinan Diamond found in 1905. The stone was so large it was cut into nine major pieces and 96 smaller brilliant cut diamonds. These diamonds have since gone on to create their own legends.

Our Heritage

Our Heritage 1
Our Heritage 2
Our Heritage 3

An influential building contractor named Thomas Cullinan bought the Elandsfontein farm that housed the Cullinan Diamond Mine in 1903. Less than two years later, a rough diamond was found nine metres down and protruding from the sidewall of the pit measuring a staggering 3,106.75 carats. The Cullinan Diamond was established as the greatest diamond ever found. The jewel was named after the mine's owner and sold to the South African government who presented it to King Edward VII on his 66th birthday. The largest diamond the world has ever known was cut into nine major stones and approximately 96 smaller diamonds.

The main piece of the polished gem, named Cullinan I, or The Great Star of Africa, was the biggest of the collection and weighed an astonishing 530.2 carats. The Great Star of Africa is displayed in the head of England's royal Sceptre while the Lesser Star of Africa, or Cullinan II weighing 317.4 carats, forms part of the British crown jewels' Imperial State Crown. Both South African-mined diamonds are exhibited at the Tower of London.

Sir Thomas Major Cullinan remained involved with operations after the significant discovery until 1923 when he resigned as Chairman and as a prominent board member, selling his shares to move on to other ventures. Cullinan died in 1936 but his mine continued to unearth the largest and most famous gems ever known. In 2003, to commemorate the world's most famous diamond mine, the 100-year-old mine was officially renamed the Cullinan Diamond Mine. To this day, the Cullinan Diamond Mine remains a major diamond producer.

Our eight legends


Polished Gem – 530.20 Carats
The Cullinan Diamond is the world's greatest diamond ever found. At 3,106.75 carats it remains the largest clean white diamond known to-date. The stone produced nine primary gems and 96 smaller stones. The Cullinan I, or The Great Star of Africa, weighs 530.2 carats and is displayed in the head of England's royal Sceptre. The South African-mined diamond is exhibited at the Tower of London.

Cullinan II

Polished Gem – 317.40 Carats
Better known as the Lesser Star of Africa, the Cullinan II weighs a remarkable 317.4 carats and is considered the second largest top-quality polished stone in the world. The diamond forms part of the British crown Jewels' Imperial State Crown and is on display at the Tower of London.

The Golden Jubilee Diamond

Rough Weight – 755.50 Carats | Polished Gem – 545.65 Carats
Discovered in the late 1980′s, The Golden Jubilee is the second largest rough stone produced by Cullinan Diamond Mine. Named after the 50th anniversary ascent of Thailand's royal couple, King Bhumibol and Queen Sirakit, the golden yellow gem resides at the Royal Museum at Pimmimak, Bangkok.

The Jonker Diamond

Rough Weight – 726.50 Carats | Polished Gem – 126.65 Carats
Johannes Makani, a working hand for 62-year-old poor diamond digger Johannes Jacobus Jonker changed the family's fortune in 1934 when he uncovered a 726 carat stone. The blue-white Jonker Diamond was bought a year later by famous New York jeweller, Harry Winston. The designer polished the gem into 13 pieces. The Jonker I, the biggest of the 13 pieces.

The Centenary Diamond

Rough Weight – 599.00 Carats | Polished Gem – 273.85 Carats
The discovery of this diamond in 1986 was kept a secret for nearly two years before being announced at the diamond producer's 100-year celebratory banquet in 1988. The Centenary Diamond was only revealed in its final, modified, heart-shaped form in 1991. The flawless stone is one of the largest top-colour diamonds ever found, surpassed only by the Cullinan I and the Cullinan II.

The Niarchos Diamond

Rough Weight – 426.50 Carats | Polished Gem – 128.25 Carats
Millionaire Stavros Niarchos purchased the Cullinan Diamond Mine's next discovery in 1954 for his wife at an extravagant $2,000,000. Before the 426,5 carat gem was fashioned into a sizeable pear-shaped stone and two smaller stones by Harry Winston's Chief Cutter, Bernard de Haan. The craftsman nicknamed the larger of the trio the Ice Queen. He claimed that the rough stone would have been hard to spot in a bucket of ice cubes.

The Taylor-Burton Diamond

Rough Weight – 240.80 Carats | Polished Gem – 69.42 Carats

The Taylor-Burton Diamond

In 1966, a sizeable 240,8 carat rock was recovered from the Cullinan Diamond Mine. The rough diamond was sent to New York to be polished by jeweller, Harry Winston, into two pieces. The larger 162 carat pear-shaped diamond, which had been set by Cartier into a neck piece, went up for auction in 1972 where legendary star, Richard Burton successfully bid for it. The diamond necklace was to be a 40th birthday gift for his wife, Elizabeth Taylor. The Taylor-Burton is currently owned by Lebanese diamond dealer, Robert Mouawad.

The Premier Rose Diamond

Rough Weight – 353.90 Carats | Polished Gem – 137.02 Carats
The 1978 Premier diamond was acquired by Jacob Mouw from the Mouw Diamond Cutting Works and called the Premier Rose after his wife Rose. The diamond was one of the largest colourless stones in the world before it was cut into three spectacular pieces. The larger of the three, at 137,02 carats retained the Premier Rose name, while the 31,48 carat stone was renamed Little Rose and the 2,11 carat gem was renamed Baby Rose – together, the diamonds are known as the Premier Rose Family.


Cullinan Diamond Mine, originally owned by and named after the town's most famous resident, Sir Thomas Cullinan, has given the world some of the most remarkable stones ever discovered and remains the world's main source for rare blue diamonds.

experience CULLINAN

Cullinan is a breathtaking 45-minute drive from South Africa’s capital, Pretoria. Visit our showroom and watch as expert cutters and polishers work their arts on each rough diamond, releasing the exquisite gemstone hidden within.


When deciding to buy diamonds there are four C's to consider: The Cut, Clarity, Carat weight and Colour. We've added a 5th C which is the Conscientious Diamond, a promise that when you are buying diamonds they are certified and conflict-free.

Contact Us

012 734 2626
082 603 4090

Sign up for our newsletter