It also included DiCaprio's Harley Davidson motorbike bearing the signatures of Martin Scorsese and Robert De Niro and a guitar belonging to U2 frontman Bono.
DiCaprio told the 500 guests -- who included stars ranging from US soap star Joan Collins to French actress Marion Cotillard -- that animal and flora species were rapidly disappearing on a scale last seen when dinosaurs roamed the earth.
Guests shelled out between $7,000 and $130,000 to attend the event.
A sculpture by British artist Damien Hirst was snapped up for $6 million by Russian-born billionaire Len Blavatnik, while South African tycoon Patrice Motsepe paid $1 million for a Picasso drawing.
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DiCaprio told the 500 guests -- who included stars ranging from US soap star Joan Collins to French actress Marion Cotillard -- that animal and flora species were rapidly disappearing on a scale last seen when dinosaurs roamed the earth.
Guests shelled out between $7,000 and $130,000 to attend the event.
A sculpture by British artist Damien Hirst was snapped up for $6 million by Russian-born billionaire Len Blavatnik, while South African tycoon Patrice Motsepe paid $1 million for a Picasso drawing.
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