Gem

Depending on quality and value, a gem can be any of:


 * Ornamental stones (base value 10gp)
 * Semi-precious stones (base value 50gp)
 * Fancy stones (base value 100gp)
 * Precious stones (base value 500gp)
 * Gem stones (base value 1000gp)
 * Jewels (base value 5000gp)