We're after pure gold, but rock that contains gold also includes lots of other materials such as quartz, calcite, and the sulfides of other metals. Since we need to separate the gold from the rest ...

Its estimated value reaches $5.4 million, a price that reflects both its intricate craftsmanship and the materials used. This majestic tree is composed of 2,024 pure 24-karat gold coins ...

People have long been fascinated by nuggets, large aggregates of almost pure gold often found nestled within the host rock or loose in weathered sediments. But how exactly nuggets form remains a ...