What is the international market price of Hornfels per kg or ton?

As of my last update in October 2023, the international market price for hornfels can vary significantly based on factors such as quality, location, and market demand. Typically, hornfels is not traded as a standalone commodity like precious metals or oil, making it challenging to provide a specific price per kg or ton. For accurate pricing, it is best to consult current market reports or suppliers in the construction and geological sectors.