Diamonds are traded internationally. They are extracted and processed by multinationals, who release them at substantial prices to global markets. There however also small miners who supply uncut diamonds on a small business basis. They are often active...
Some say rough diamonds are storing the highest value on the smallest space, but could they function as currency? There is a debate about what currency to use. Most Austrians would favour a gold based money and oppose fiat money(money created on the books...