Gold nugget...
A Californian man armed with a metal detector and a shovel discovered an 8.2-pound lump of gold in his backyard in 2011. Thanks to its extraordinary size, the nugget was sold at auction for an incredible 460,000. The lucky finder of the nugget remained anonymous to prevent a literal gold rush onto his property. Geologists said the likelihood that there is more gold on that land is 100 percent so the Californian may spend the rest of his life digging up his backyard.