Platinum is one of the densest and heaviest metals, highly malleable. It is extremely
resistant to oxidation and to corrision of high temperatures or chemical elements
as well as a very good conductor of electricity and a powerful catalyzing agent.
Platinum is soluble only in aqua regia. This precious metal has silver-white color
and does not tarnish.

In this website you will find:

Uses of Platinum

How Platinum is Mined

The Value of Platinum