Monday, April 6, 2009

Where is it found?


The most famous diamond bearing country is South Africa. The first diamond was reported in 1866. By 1869 an 83.5 carat diamond had been found and was named The Star of Africa. It was subsequently cut into a pear shape brilliant weighing 47.74 carats. The Golconda area of Southern India has been the source of some famous diamonds such as the Koh-i-nor (mountain of light 186cts cut to 108.92 cts and now in the Tower of London) and Jehangir. Diamond is widespread in Brazil, most stones being small but of good gem quality. Alluvial diamonds have been found in most states of the USA. White and fancy coloured diamonds such as pinks and pinkish browns are mined at Argyle in North Western Australia. Other important producers are Russia, now the fourth largest producer, and China.




By weight the top ten producers in 1994 were:
By Value The top ten were:

Australia
Botswana

Zaire
Russia

Botswana
South Africa

Russia
Zaire

South Africa
Australia

South America
Namibia

Angola
Angola

Namibia
South America

Ghana
Guinea

Guinea
Sierra Leone





Estimated 2001 Diamond Production by Country
Country Carats
(‘000)
Value
($
m)
Botswana 26,416 2,194
Russia 20,500 1,650
South Africa 11,301 1,145
Angola 5,871 803
D.R. Congo 19,637 496
Canada 3,685 531
Namibia 1,502 322
Australia 26,070 294
Guinea 754 128
Sierra Leone 375 68
Central Africa Republic 614 92
Venezuela 325 41
Tanzania 191 28
Brazil 550 22
Liberia 155 23
Ivory Coast 145 17
China 150 15
Ghana 450 11
Lesotho 20 4
Guyana 20 2

Total
110,176 7,253
*Source: Mining Journal, London, August 23, 2002

Current Annual Production t World's Major Mines, 2001


Country

Carats Tonnes US$/carat Value

(‘000) (‘000)
($ m)

Canada


Ekati 3,685 3,685 144 531

Botswana


Jwaneng 12,339 8,920 110 1,357

Orapa 13,056 15,779 50 653

Letlhakane 1,021 3,625 180 184

South Africa


Venetia 4,977 4,602 85 423

Namaqualand 808 6,083 180 145

Finsch 2,465 4,768 70 173

Premier 1,637 3,102 75 123

Kimberley 550 3,766 110 61

Baken 65 5,835 400 26

Koffiefontein 145 2,299 225 33

Russia


Udachnaya 11,500 9,000 85 978

Jubilee 5,500 9,100 65 358

Australia


Argyle 26,000 15,100 11 286

Merlin 70 270 110 8

Namibia


Namdeb Onshore 1,385 21,867 220 305

**Source: Mining Journal, London, August 23, 2002