Dinosaur bones, royal jewels and ultra-rare Pokémon cards? They're just a taste of the outrageously expensive collectibles the world's multimillionaires and billionaires are coveting right now.

The new status symbols for those who have everything, the most sought-after are highly lucrative investments to boot. Read on to discover what the mega-wealthy are currently blowing their fortunes on, with insights from the 2025 Knight Frank Luxury Report. All dollar amounts in US dollars.