Bloomberg Western Australia may ask Rio Tinto Group and BHP Billiton Ltd. to pay potentially billions of dollars to end a mining rent tax to help patch a budget decimated by lower commodity prices. The state government is seeking advice on a proposal that would see the nation’s two biggest miners pay out an iron-ore levy early in a one-off ...

Bloomberg Not everything Elon Musk touches has been a runaway sales success. While Tesla Inc.’s Model S has been a hit and thousands lined up to order the upcoming Model 3 sedan, the Model X sport utility vehicle hasn’t met the chief executive officer’s expectations. Model X deliveries have yet to keep pace with the Model S, as Musk predicted, ...

Bloomberg In the diamond industry, the only place that really matters is the US, and the market is starting to look a little shaky. In a country where consumers buy almost half the world’s gems, Tiffany & Co. and Signet Jewelers Ltd. this week reported disappointing sales. That’s a blow to expectations that President Donald Trump’s pro-business policies would give ...