Mayweather v McGregor is, in terms of money, the biggest fight ever, with Mayweather possibly earning $300 million and McGregor clearing $100 million. And the organisers have decided to ensure the belt the fighters will be battling for is at the same level, in cash terms anyway.

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Alligator leather, diamonds, sapphires, emeralds...

The Italian-crafted alligator-leather belt was presented by WBC president Mauricio Sulaiman at the final press conference before the self-styled once in a lifetime fight spectacle on Saturday night in Las Vegas, and features the following:

3,360 diamonds
600 sapphires
300 emeralds
1.5 kg of gold

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Mayweather, who has an unbeaten 49-0 record, takes on the UFC champion on Saturday night at the T-Mobile Arena. As the organisers say: "Fists will fly and worlds will collide as the most disciplined and fundamentally sound fighter in the history of boxing steps into the ring with one of the most impressive MMA fighters to ever carry the title of UFC Champion."