World Diamond Resources and Origins

World Diamond Reserves and Production Overview:

At present, there are proven natural diamond reserves of about 250 million carats, of which 650 million carats in Australia and 550 million carats in Zaire. The current level of exploitation of existing diamond reserves can only be exploited for 25 years, but with the improvement of prospecting technology, new mining areas are discovered every year, and diamond reserves in Canada have increased significantly in recent years.

Since the diamond mining, a total of 350 tons of diamonds have been recovered, representing 1.75 billion carats. Nowadays, diamonds are extracted from 90 to 100 million carats each year in the world, among which gem grades account for 17%-20%. The 20% gem diamond is worth 5 times the value of 80% industrial diamond.

1. Diamond-producing countries have produced diamonds around the world, and more than 30 countries have diamond resources, with an annual output of about 100 million carats. The top five countries in production are Australia, Zaire, Botswana, Russia and South Africa. The diamond production in these five countries accounts for about 90% of the world’s diamond production. Other diamond-producing countries are Congo (Kinshasa), Brazil, Guyana, Venezuela, Angola, Central Africa, Ghana, Guinea, Gulf Coast, Liberia, ****, Sierra Leone, Tanzania, Zimbabwe, Indonesia, India, China, Canada and so on.

China’s proven reserves and production of diamonds ranks about 10th in the world, with an annual output of 200,000 carats. Diamonds are mainly located in Wafangdian, Shandong, Mengyin, Shandong and the Lancang River in Hunan. Liaoning Wafangdian is currently the largest diamond in Asia. mine.

2. For the diamond-producing countries that produce the best diamonds, the best diamonds come from the diamonds mined in the alluvial deposits. The natural weathering of these diamonds was carried to the beach for a distance of 1,000 miles. After this journey, the fragile parts of the diamond are separated. In a specific deposition environment, diamonds are distributed in rock formations according to different shapes and sizes. The mining area's gem-quality diamond clock reaches 97%. It is difficult to tell which country and mine was produced from the cut diamond ring.

Diamonds produced in any mining area are good, medium, and poor. The ratio of the best diamonds in the mining area to the worst-produced diamonds in the mine is not necessarily the same as that of the alluvial deposits.

3. Changes in the origin of diamonds India was the first country in the world to discover diamonds. India was the only origin of diamonds 3000 years ago. From the year 2000 to the beginning of the 18th century, the Krishna River, the Penna River and its tributaries in India were the only places in the world where diamonds were produced. Many famous diamonds such as kohi-noor and Orloff were historically known. Both the great mogul and the great mogul are from India, but currently India's diamond production is very small.

By the discovery and exploitation of Brazilian diamonds in 1725, Brazil replaced India as the most important diamond production site in the world.

After 1867, South Africa discovered that alluvial sand deposits and a large number of native Kimberlite crusts made South Africa the world’s most important diamond producer. Its production has long been at the forefront of the world and has thus created a new era in the diamond industry. In 1905, the world’s largest kimberlite rock tube, the Premiere Rock, was discovered in Azjaja, South Africa, where the largest diamond (Cullinan diamond) was discovered. At present, South Africa has the largest and most modern Venitia diamond mine in the world. South Africa has large diamond particles and excellent quality. 50% of diamonds are cleavable. Although its output is not as high as those in Australia and other countries, its output value has been among the highest in the world.

Since 1979, it was discovered that diamonds were contained in the potassium-magnesia porphyry in western Australia. By 1986, diamond production in Australia had dominated, but the gem grade accounted for only 5% of its production. Australian diamonds are mainly distributed in bingara and copeton in New South Wales, Western Australia, and in particular, argle deposits are 550 million carats.

Botswana produces high-quality diamonds, accounting for 50% of gem grades, and its production value ranks first in the world. Botswana’s diamonds originate from open-pit Kimberlite. The vast mines include orapa rock (1967), Letihakena (1977) and Jwaneng (1982). The total output of the three mines exceeded 15 million in 1989. carat.

Russia's diamonds are mainly distributed in the Yakutia region of central Siberia. More than one hundred diamond-bearing kimberlite barrels were found in this area. In 1988, Russia found new diamond mines near Europe. At present, Russian diamond production is about 12 million carats, and half of it is gem grade. Over the years, Russia has developed an independent diamond mining and processing and sales system, which has a large number of diamonds, excellent quality and uniformity, and is highly competitive in the market.

A few years ago, a large amount of kimberlite was discovered in northern Canada. Diamond production can account for 10% of the world's production in a few years.

4. The world's first diamond mine on July 16, 1871, insisted on the success of the Colishburg mining team excavated in the depths. They have been digging deep into the tens of square meters of land they occupy. On this day, they finally found the diamond they dreamed of. The world’s first diamond mine was born. The name "Kurrisburg Mine" is also called "New Blast Mine."

5. The diamond mines in South Africa mentioned that diamonds people will think of South Africa when they live. Diamonds produced in South Africa are famous for their large particles and good quality. 50% of the diamonds produced from mines can reach the gem level. More than 50 years ago, South Africa's diamond production ranked first in the world, so often customers would ask, “Is this a South African diamond?” As time goes by, South Africa’s diamond production has been decreasing year by year. In 1987 South Africa’s diamond production was 10 million carats, which was about 10% of the world’s total production.

6, the largest single-diamond production in 1905 in South Africa's Premier Mine, found heavy 3106 carats of giant drill, named "Cullinan", in 1919 in the mining area and found a weight of 1500 carats of diamonds, according to its shape, After the color and repeated comparison studies, it was determined that it should be the same crystal as Cullinan, so there was no name. If it did not split into two pieces, Cullinan weighed less than 4606 carats. In 1980, the third large drill was found to have a weight of 599 carats. The South African Premier Mine is the world’s recognized producer of giant diamonds.