"No diamonds have ever gone missing, " Mr Masimirembwa is quoted as saying.
The exporters have been asked to make sure no diamonds have been sourced from Angola, Sierra Leone or the Democratic Republic of the Congo.
But even if most conflict diamonds no longer sail unchecked through Antwerp or London, the evidence is that many are merely diverted to Tel Aviv and Mumbai.
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The story might sound far-fetched, and anywhere else it would be, but Namibia is a land of diamonds like no other.
Apart from low-quality industrial diamonds, the stones had no practical use that would help prop up their price.
There are a few sites like Goodreads and Indie Reader that offer alternatives to the untrustworthy online review, but for the ordinary reader, there is no single source available to sort the diamonds from the coal.
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Unlike diamonds and gold, there is no widely-accepted price list that sets sapphire values, which makes for tricky investment planning.
The villages have welcomed back migrant workers from neighbouring states, where people no longer find work twisting steel in Mumbai or polishing diamonds in Surat.
More competition means De Beers can no longer control prices the way it used to: by buying diamonds when markets are weak and selling when they strengthen.
One expert on the Crown Jewels said, by definition, all diamonds produced before the mid-18th Century were of Indian origin since no other country mined them.
In his last decade, Mr Savimbi had no outside support, so he kept his army supplied with bombs and bullets by selling diamonds mined in areas he controlled.
Rwandan officers are doing nicely out of looting Congolese diamonds, ivory and coltan, a mineral used in mobile telephones, and have no wish to stop.
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