mythical fruit of power nicknamed 'the cutlass' with the design of a silver banana, it gives the user the ability to turn anything you wish into ANY metal you want as long as you can feel it with your hands or see it with your eyes

The "anything you wish into any metal" clause is an upgrade over the Philosopher's Stone's "Lesser metal -> Gold/Silver," though seems to lack the immortality (via an elixir of life) the stone may be able to deliver.