The Cupro’s Stones Mod adds 10 new types of stone and updates the stone graphics for more realism. The amount of stone types that appear on the map can be set in Options: Mod Settings
Cupro’s Stones Mod features
New Stone Types:
Cupro's Stones Mod Review
The stones added by the Cupro’s Stones Mod can give a new look to the planets you visit in RimWorld, making them not look so much like Earth.