In 2016, archaeologists working at a dig site in Bulgaria came across a tiny but significant find: A gold bead measuring about an eighth of an inch in diameter, which scientists believe may be the oldest piece of refined gold jewelry ever discovered -- dating back as far as 4600 B.C.
This discovery holds significance not just to scientists but to investors as well. Simply put, it means that humans have been mining and refining gold for more than 6,600 years. And if that's true, gold investors may wonder: After seven millennia of exploitation, how much gold is left in the world to be discovered, mined, and refined in the future?
Read the rest of the story at https://www.fool.com/investing/2018/05/12/how-much-gold-is-left-in-the-world.aspx