Got a cool million in the bank, just begging to be spent? Then Richard Mille could be the horologist for you! This ultra-luxe Swiss watch brand, beloved by celebs (and especially sportsmen), prides itself on tourbillon mechanisms and uber-tekky transparent cases, meticulously crafted from far-out materials like chondrite meteorite and sapphire. Most models are limited edition, which makes them some of the most expensive in the world.