More interesting facts about gold:
* The term "gold" comes from an old Anglo-Saxon world 'gelo', or yellow.
* Less than 50% of all the world's gold is still in the ground.
* Two thirds of the world's supply of gold comes from South Africa. US sources include South Dakota and Nevada. The UK has a small amount in Wales.
* Gold is used in window glass and astronaut helmets to reflect infrared rays while allowing sunlight to pass through.