Jewelry companies team up with IBM on blockchain platform

Talks with Linc Energy Ltd are said to be at an advanced stage and an agreement may be announced as soon as tomorrow.

Alrosa’s shares took off on the news, adding as much as 9% Wednesday, the highest level since December 2011.

55% tax rate and 10% royalty on turnover makes life difficult for marine miner Namdeb.

And only 22% of companies have any sort of succession plan in place.

It is the most valuable diamond to have ever been offered at auction.

And what can be really done to choose certified conflict-free diamonds.

Other notable good performers in the 2013 Corruption Risk Index are Senegal and Botswana.

Unlike legitimate countries that export tantalum, the Congo is a nation dominated by warlords who force children and locals to work under horrifying conditions.

The flawless 118-carat white gem goes under Sotheby’s hammer in Hong Kong on Oct. 7