I've never heard of red mercury before but I guess that just sums up how naive I am with everything that is happening around me.
It is uncanny how a blue flame rises from a red composition but I guess if we look at most flammable materials the flame differs from the colour of the material.
I'd understand why it would be used in things such as sorcerers as I bet it is pretty captivating and enchanting to see such contrasting colours occur at one time. It sounds like something a witch would use haha
It seems like it is made in the manufacturing of some pretty sinister things. It is weird how we have never found it. I feel as if it would be something real and hidden away but like me and many others, I'm not sure @joseph