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)

See also: Hardstones