Vladimir Potanin

For a rich and reasonably successful guy, it is impossible not to enjoy your job; otherwise, why would you spend so much time and effort doing it? I am a great fan of Norilsk, and I like this kind of challenge.

Everybody starts with creating or acquiring certain property in order to create the material to work with. When we started our business, we thought first of all about development, how to grow, and we managed to do this, even with all the difficulties and all the difficult rules that were implemented in Russia at that time.

And I think that still is true of this business - which is basically research and development - that you probably spend more time in planning and training and designing for things to go wrong, and how you cope with them, than you do for things to go right.

The price of diamonds can vary greatly depending on size, cut, color, and other factors, including whether they have a history. But because of the rarity of blue boron diamonds, they often fetch more money than gems of similar quality.