there could be for blackrock? Assuming that there were enough magic
in our world to mold it, that is. One of the first things that came to my
mind was a replacement for asphalt for streets - although that would
probably never happen, seeing as how the streets would never need
to be rebuilt, and the construction workers wouldn't get paid for doing
nothing anymore.

Another idea that came to mind was lining a vest with blackrock to make
a rocket-proof vest.