What is phoenix stone made of?

Phoenix stone, often referred to in various mythologies and metaphors, is not a scientifically defined material. However, in some contexts, it may represent a symbolic substance associated with rebirth or regeneration, akin to the mythical phoenix rising from its ashes. In certain fantasy settings or games, it might be depicted as a magical or rare mineral with unique properties. If you are referring to a specific context, such as a game or literature, please provide more details for a tailored response.