Gold
The soft, thick, bright yellow metal known as gold (Au) is renowned for its ductility, malleability, and corrosion resistance. It conducts electricity and heat well. Since gold is a noble metal, it does not tarnish or rust and is chemically unreactive.

Silver
A soft, shiny, white metal with a high electrical and thermal conductivity, silver is a precious metal prized for its beauty and has been used for many things throughout history, such as jewelry and coins.

Palladium
Palladium is a silvery-white metal that is considered to be around 15 times rarer than platinum, making it much more expensive per ounce. It is a member of the platinum group of metals and has a high melting point and corrosion resistance.