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The Daily Insight

How diamonds were found in South Africa

Author

Rachel Hunter

Published Mar 18, 2026

The first diamond discoveries in South Africa were alluvial, meaning they were found as deposits along a river bed. In 1867, a 15-year-old boy named Erasmus Jacobs found a small transparent rock along the banks of the Orange River, near his farm where he lived with his family.

How are diamonds found in Africa?

In this south central region, diamonds are mined from kimberlite mines in South Africa, Angola and the DRC, and from alluvial dredging mining operations in Angola, Namibia and again, South Africa. West African diamond mining is mostly from altered kimberlite pipes and eluvial deposits.

How did they discover diamonds?

Diamonds were discovered in the pans of gold miners as they sifted through the gravels of local rivers. … By 1900, De Beers, through its mines in South Africa, controlled an estimated 90 percent of the world’s production of rough diamonds. The South African sources affected many segments of the diamond industry.

How were diamonds discovered in Kimberley?

It lies near the Free State province border. Founded after the discovery of diamonds on farms in the area in 1869–71, the mining camp of Kimberley grew as a result of the intensive digging of the diamond-bearing pipe at the hill called Colesberg Koppie.

Is there diamond in South Africa?

THE HISTORY OF DIAMONDS Today South Africa maintains its position as a major diamond producer. … By 1869, diamonds were found far from any stream or river. First in yellow earth and below in hard rock called blue ground, later called kimberlite, after the mining town of Kimberley.

What Rocks are diamonds found in?

Background. The diamond is the hardest natural substance known. It is found in a type of igneous rock known as kimberlite. The diamond itself is essentially a chain of carbon atoms that have crystallized.

Where can I dig for diamonds in South Africa?

The Cullinan diamond mine is located in the Gauteng province of South Africa. The site is situated 40km east of Pretoria in Cullinan. The diamond mine is also known as Premier mine.

What is the biggest diamond ever found?

At present, the largest diamond ever recorded is the 3,106-carat Cullinan Diamond, found in South Africa in 1905. The Cullinan was subsequently cut into smaller stones, some of which form part of British royal family’s crown jewels.

Where the first diamond was found?

Diamond History The earliest diamonds were found in India in 4th century BC, although the youngest of these deposits were formed 900 million years ago. A majority of these early stones were transported along the network of trade routes that connected India and China, commonly known as the Silk Road.

Where was the biggest diamond found in South Africa?

Cullinan Mine is in the Magaliesberg mountain range, 37 kilometres north-east of Pretoria. The largest rough gem diamond ever found – coming in at 3 106 carats – was discovered here in 1906. The stone was cut into the two most important diamonds – which now form part of the British Crown Jewels.

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Who owns the diamonds in South Africa?

Ever since the Kimberley diamond strike of 1868, South Africa has been a world leader in diamond production. The primary South African sources of diamonds, including seven large diamond mines around the country, are controlled by the De Beers Consolidated Mines Company.

Where are most of the diamonds found?

  • Russia.
  • Botswana.
  • Canada.
  • Angola.
  • South Africa.
  • Democratic Republic of Congo.
  • Namibia.

Where do diamonds go after they are mined?

Q: After the diamonds are sorted and sold, what happens to them? 90% of the world’s diamonds then travel to China or India to be cut and polished. It takes 2-3 weeks for this process and then it is ready to be certified by one of the world’s gem laboratories.

When were diamonds found in South Africa?

The discovery of diamonds in South Africa occurred in early 1867 on the land of a poor Boer farmer, Daniel Jacobs, near the small isolated settlement of Hopetown on the Orange River in the Cape of Good Hope Colony.

Are diamonds still mined in South Africa?

The country is an important source of fancy color diamonds and especially of rare pink and blue colors, including a 122.45-carat blue diamond discovered at the Cullinan mine in 2014. While South Africa is still a major diamond producer, it is believed that the majority of its diamonds have been mined.

Where Can diamonds be found naturally?

Diamonds are present in about 35 countries. South Africa, Russia and Botswana are the main producers of gem diamond while Australia produces most of the industrial diamond. They are also found in India, Russia, Siberia, Brazil, China, Canada and the United States.

How deep can you find a diamond?

Most gem-quality diamonds come from depths of 150–250 km in the lithosphere. Such depths occur below cratons in mantle keels, the thickest part of the lithosphere.

Who owns the biggest diamond mine in South Africa?

LocationOpened1902OwnerCompanyPetra Diamonds Cullinan Consortium

Can diamonds be found in a river?

While diamonds are usually found within kimberlite pipes, over time, the pipes can be eroded by rivers and the diamonds will be washed down stream. It is extraordinarily rare to find an alluvial diamond that weighs hundreds of carats.

How can you tell if a diamond is in the ground?

  1. They do not look like the ads. Diamonds sold in stores are already cut and polished. …
  2. Check for their natural shine. Diamonds are literally brilliant. …
  3. Diamonds are rounded not edged. …
  4. Check for translucency. …
  5. Check for toughness.

How do I find diamonds in my yard?

You can look through the alluvial deposits of sand and mud from old river and stream beds to pan for diamonds by using methods that include scanning the surface, sifting the soil, and then sifting the soil in water.

What does a diamond look like when it's found?

Diamonds found at the Crater are typically smooth and well rounded. Their shape resembles a polished stone with smooth sides and rounded edges. Size: The average size of a diamond is about the size of a paper match head, approximately 20-25 points weight.

Why is Africa rich in diamonds?

Diamonds in Africa were formed somewhere between 600 million and 3 billion years ago when titanic-force pressure and heat caused carbon 1,200 miles (1,931 km) below the Earth’s surface to crystallize. As recently as a million years ago, erupting molten rock brought the diamonds closer to the Earth’s surface.

Where is platinum found in South Africa?

Marikana is located near Rustenburg, about 112km from Johannesburg in South Africa. It is a producer of platinum group minerals (PGMs) and covers an area of 33km².

Where is the Star of Africa diamond kept?

Today, the diamond is located in the Tower of London in the British Sovereign’s Royal Scepter. The diamond is not alone there, as the Cullinan II, along with some of the other smaller cuts of the original Cullinan diamond, is also located in the Tower of London as part of the Crown Jewels.

How much does a 1 carat diamond cost in South Africa?

How much is a 1 carat diamond? A round brilliant cut, 1.00ct G colour, SI1 clarity, excellent cut GIA-certified diamond will cost approximately $6850 including VAT (~ R106,183). A princess cut, 1.01ct H colour, SI1 clarity, GIA-certified diamond will cost approximately $4584 including VAT (~ R71,049).

How much is the Star of Africa diamond worth?

The Cullinan Diamond – Worth $400 Million At 621.35 grams, the rough-cut Cullinan is the largest gem quality diamond ever discovered in the world. It’s was so large that even after being cut into the famous 530 carat Star of Africa diamond, there was enough left over for several more valuable stones.

Who owns the Star of South Africa?

TypeDaily newspaperOwner(s)Independent News and Media SAPublisherSekunjalo Independent MediaEditorJaphet Mathanda NcubeFounded6 January 1887

Why is Hope diamond cursed?

The Hope Diamond is thought to be cursed as it was stolen from a Sita idol in India. The original thief was torn to pieces by dogs and everyone else who has been involved with the diamond met horrible deaths and bad luck.

Which African diamond is famous?

The Cullinan Diamond is the largest gem-quality rough diamond ever found, weighing 3,106.75 carats (621.35 g) (21.9 ounces), discovered at the Premier No. 2 mine in Cullinan, South Africa, on 26 January 1905. It was named after Thomas Cullinan, the mine’s chairman.

How much is De Beers worth?

In 2020, the revenue of diamond mining company De Beers was about 3.4 billion U.S. dollars.