Currency Trade Goods

Since the universe is so vast, and minerals such as Gold appears in many different places in the same universe, often minerals are used as what the slang is "Currency Trade Goods". The idea is that merchants will carry around materials such as Gold or Silver, and when someone sells Goods, such as Sugar, they give the patron the needed supply of Emerald, Ruby, Gold, Silver, or Copper, and these materials will be sold on the patron's planet that supports his or her currency, and they'll get their weight in their Currency with the trading of these minerals.

The Range of Currency Trade Goods is:

Emerald:

Currency Weight: 50,000c

Ruby:

Currency Weight: 25,000c

Gold:

Currency Weight: 10,000c

Silver:

Currency Weight: 5,000c

Copper:

Currency Weight: 1,000c