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The first european diamond hunter in North America was the French explorer Jacques Cartier. He sailed up the St. Lawrence River in the 1530s and spotted sparkly things in the rocks--quartz crystals, but he thought they were diamonds. Europe went crazy until the truth came out. That’s where you get the French proverb “Voila! Un diamant du Canada!”-- the rough equivalent of the American saying, “Phony as a three-dollar bill.”
How Diamonds Are Made

 

 

Indicators: Early diamond mining was always in alluvial deposits. Not until the association of kimberlite pipes in South Africa with diamonds did scientific study begin - studying how to find pipes - along with which might come diamonds.

 

The South Africa Story

It was not until the 1867 discovery of diamonds near Hopetown, south of Kimberley in South Africa, that the modern diamond industry was born. The 1870s and 1880s in the Northern Cape saw a frenzied rush to the newly discovered diamond fields.

Diggers and prospectors came from all over the country and abroad. Soon the terrain was transformed into a landscape of ever-deepening pits, as diggers burrowed their way into the diamondiferous rock. Claims even collapsed into one another, and the holes grew larger until the 'Big Hole' at Kimberley became, and remained, the largest hand-dug excavation in the world. It ceased production in 1914 after having produced 14 504 566 carats of diamonds from 22,6 million tons of ground. It was mined to an open-pit depth of 240 m and has a surface area of more than 15 hectare. The mine went underground to a depth of 820 m. The 'Big Hole', has been declared a national monument, and a museum depicting the history of diamond mining in the country has been established near the site.

Two companies emerged from the rush, the Kimberley Central Mining Company and the De Beers Mining Company, named after the De Beers brothers, owners of the land where the rush began. In March 1888 the companies merged to form De Beers Consolidated Mines Limited. The money and expertise gained on the Kimberley diamond fields were invaluable in opening up the new Witwatersrand goldfields in 1896. Single-channel marketing developed from this company and existed then through what was known as the 'London Syndicate', precursor to the current Central Selling Organisation (CSO).

The world's largest gem quality diamond, the Cullinan, was found in South Africa in 1905. Uncut, it weighed 3 025 carats.

 

From 60 Minutes II (edited)

Diamond were first mined in India. The word most generally used for diamond in Sanskrit is transliterated as “vajra,” "thunderbolt," and “indrayudha,” "Indra's weapon." Because Indra is the warrior god from Vedic scriptures, the foundation of Hinduism, the thunderbolt symbol indicates much about the Indian conception of diamond.

By the 4th century B.C.E., the diamond was a valued material. The earliest reference to diamond is found in a Sanskrit manuscript by a minister in a northern Indian dynasty (320-296 BCE.).

Some diamonds appeared in European regalia and jewelry in the 13th century, set as accent points among pearls in wrought gold. By the 16th century the diamonds became larger and more prominent, in response to the development of diamond faceting, which enhanced their brilliance and fire. Diamonds came to dominate small jewels during the 17th century and large ones by the 18th century.

In the 13th Century, Louis IX of France established a law reserving diamonds for the king. This bespeaks the rarity of diamonds and the value conferred on them at that time. Within 100 years diamonds appeared in royal jewelry of both men and women, then among the greater European aristocracy, with the wealthy merchant class showing the occasional diamond by the 17th century.

Until 1725 India was the major source of diamonds, with much smaller amounts mined in Kalimantan (Borneo). diamonds were then discovered in Brazil, which became the leading supplier as Indian production waned. South African diamonds were found first in 1867, in gravel near the Orange River.

Further exploration in the Kimberley region of South Africa revealed volcanic formations called "pipes" filled with a hitherto unknown rock type which contained diamonds. The rock, a variety of peridotite, was named "Kimberlite" after the region of its first discovery and was recognized as the diamond source rock: this discovery formed the basis of the huge modern diamond industry and placed South Africa at honorary position in the diamond world.

As more diamonds reached Europe, demand for them increased. The earliest diamond-cutting industry is believed to have been in Venice, a trade capital, starting sometime after 1330. Diamond cutting may have arrived in Paris by the late 14th century. By the late 14th century, the diamond trade route went to Bruges and Paris, and later to Antwerp.

By 1499, the Portuguese navigator Vasco da Gama discovered the sea route to the Orient around the Cape of Good Hope, providing Europeans an end-run around the Arabic impediment to the trade of diamonds coming from India.

In the 18th century the diamond became even more abundant. They were worn principally by women. Substantial quantities of diamonds arrived from South America, making conspicuous display of the gem possible. Diamonds were reserved for evening since it was considered vulgar to parade them by day. Rather than a miscellany of jewels of different types, a matched set of jewelry -- was now worn at all important social events.

Two events near the end of the 19th century helped change the role of diamonds for the next century. First, the discovery in the 1870s of diamond deposits of unprecedented richness in South Africa changed diamond from a rare gem to one potentially available to anyone who could afford it. Second, the French crown jewels, sold in 1887, were consumed by newly wealthy capitalists, particularly in the United States, where a taste and capacity for opulent consumption was burgeoning.

Seen under the blaze of gas and electric lighting, diamond's brilliance showed to greater advantage than colored stones, and so designs incorporated them in far greater numbers than at any time in history.

Before the 1870s diamonds were still rare, and associated with the aristocracy. In 1871, however, world annual production, derived primarily from South Africa, exceeded 1 million carats for the first time. From then on, diamonds would be produced at a prodigious rate.

Simultaneously, the fall of Napoleon III in 1871 left the Third Republic of France with a problematic symbol of monarchy: the crown jewels, largely reset by Empress Eugenie in the style of the great Louis kings. It was decided to auction the bulk, retaining a few key objects for the State.

With French buyers such as Boucheron and Bapst in attendance, Tiffany & Co. of New York bought the major share; 22 lots for $480,000, a sum greater than the combined purchases of the 9 next-largest buyers.

Today diamonds are mined in about 25 countries, on every continent but Europe and Antarctica. However, only a few diamond deposits were known until the 20th century, when scientific understanding and technology extended diamond exploration and mining around the globe. For 1,000 years, starting in roughly the 4th century BC, India was the only source of diamonds.

In 1725, important sources were discovered in Brazil, and in the 1870s major finds in South Africa marked a dramatic increase in the diamond supply. Additional major producers now include several African countries, Siberian Russia, and Australia.

It is a modern misconception that the world's diamonds come primarily from South Africa: diamonds are a worldwide resource. The common characteristic of primary diamond deposits is the ancient terrain that hosts the kimberlite and lamproite pipes that bring diamonds to Earth's surface.

Diamond production has increased enormously in the 20th century. India's maximum production, perhaps 50,000 to 100,000 carats annually in the 16th century, is very small compared to the current production of around 100 million carats.

 

 

The Story of Indicator Minerals - History