Saudi Arabia has finally launched its initial public offering of shares in Aramco, which the kingdom hopes will help wean its economy off dependence on crude exports.

The IPO is intended to give investors the chance to own a piece of the world's most valuable company. To lure investors, authorities are promising potential tax incentives and future fat dividends.

The shares will first be floated on the Tadawul exchange in Riyadh, while Aramco executives are embarking on an international roadshow to promote the sale.