It turns out Russia has been keeping a state secret since the 1970’s.
A motherload of diamonds.
It’s a whopper of a secret as we are talking “trillions of carats”, enough to supply global markets for another 3,000 years.
The diamonds are located in a 62-mile diameter asteroid crater in Eastern Siberia known as Popigai Astroblem. The site was kept secret during the Soviet period to regulate prices as they already had a very productive mine in Mirny, Yakutia.
These diamonds due to their extraterrestrial nature are apparently twice as hard as usual diamonds lending them to industrial uses.
A glittering surprise this maybe but here is one commodity that is not traded in an exchange regulated market so for the vast majority, although a supply big enough to shake up the world market, not one that you can trade.