Investors ain’t seen nothing yet when it comes to the value of gold, a top mining executive said after the precious metal reached a record-breaking price this week. Gold could climb to $5,000 an ounce within a year – and double that by the end of the decade — Randy Smallwood, chief executive of Wheaton Precious Metals Corp., told Bloomberg Television on Friday . “I’m confident that we will see gold over $5,000 within the next year,” he said. “It’s a trajectory that could easily put it up to $10,