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 Rough diamond trade |
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 Central Selling Organization (CSO) |
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 The most common route
is through the channels of DeBeers' Central Selling Organization (CSO).  Diamond Trading Company which are mined from De beers owned
mine to CSO diamonds. CSO has purchase offices in various diamond producer countries. The Diamond Trading
Corporation's purpose is to stabilize prices when times are hard, and raise them with inflation and demand
when times are good. The DTC holds ten week-long selling sessions called sight
each year. These sights are by invitation only, and only a handful of diamond
manufacturers from around the world (called sightholders) are allowed to attend.
The value of each sight varies from US$500,000 to
US$2,000,000. |
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| « Outside » market |
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The « outside » market is the
market « outside CSO », i. e. not controled by De Beers.
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| Exchange-bourse |
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| The major diamond manufacturing
centers includes Israel, Belgium, India and New York. The most important is Antwerp in
Belgium, more than half of the world market of polished diamonds passes by Antwerp. |
In Belgium, approximately 1,500
diamond offices are located in Antwerp in a diamond district: Hoveniersstraat,
Schupstraat, Rijfstraat and Pelikaanstraat. The rough is distributed to the cutting
centers and to dealers in Antwerp, where approximately 80-85% of the total rough diamond
trade takes place. The main diamond bourses in Antwerp are:
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 Anwerp Diamond
Bourse. Beurs voor Diamanthandel: polished diamonds. |
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Diamond Club: polished and rough diamonds. |
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Vrijediamanthandel:
polished and rough diamonds. |
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DiamantKring: rough diamonds. |
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| The conditions to become member
of one of these bourses are very strict. |
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1.71 carat G-VVS1 |
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0.23 carat D-VVS1 |
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1.37 carat E-VS1 |
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1.39 carat D-VS2 |
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0.42 carat D-VS1 |
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| Price: £ 15,057 |
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| Price: £ 247 |
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| Price: £ 9,621 |
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| Price: £ 5,694 |
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| Price: £ 885 |
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