Gems

Gems can be obtained from the Ore Mining Facility after it is upgraded its path 3 by that percent per tick. Gems on a Ore Mining Facility can come in all colors but will all be blue in your inventory. There is no difference between the colors. Gems can be ether sold for cash or can be used for fusion. The sell price of gems changes based on this formula.

15000+ (1.14 ^ [ Ore/Gem Value Upgrade level] + 45)