What are the Paris Olympics medals made of?

What are the Paris Olympics medals made of?

It became known what the medals for the winners and prize-winners of the Summer Olympic Games to be held in Paris, the capital of France, are made of.

The medals were created by melting down metal scraps removed from the Eiffel Tower during previous renovations.
In the center of the hexagon is the logo of the Summer Olympics and the hexagonal map of France. The reverse of the medal depicts the Greek goddess of victory, Nika, the Acropolis of Athens and the Eiffel Tower.

Did you think that medals are made of real gold and silver?