Bullion
Bullion is gold bars, silver bars, and other bars or ingots of precious metal. The word bullion comes from the French Minister of Finance under Louis XIII, Claude de Bullion.
The value of bullion is typically determined by the value of its precious metals content, which is defined by its purity and mass. To confirm the purity of the gold, a modern laboratory uses modern XRF technology to accurately assess its quality in order to ensure the owner receives fair market value for it. It is also weighed extremely accurately.