I would like to propose the addition of emeralds to the game. Given its real-world rarity and beauty, it would make a fantastic high-tier addition for dedicated players
To reflect the difficulty of obtaining this ore I suggest the following cost
Raw ore: 240 per unit
Refined Emerald: 360 per unit
Forged Emerald: 504 per unit
Why add it?
Emeralds would offer an extreme challenge to late game players and provide a unique aesthetic for builds. Its price point ensures it is rewarding to find but as how much it costs it should be located inside an extreme environment like a cave near the magma cave.