I have looked at pictures of all of them and they all look the same....i need to know these for a test in my class and i can not taste the halite and sometimes the calcite does not fizz when i dropw acid on it....
Quartz can produce an electrical reaction. It is also distinguished as a gem that is capable of triboluminescence, or the ability to create light under pressure. This mystery light is not electricity in the form that we know it, but it is often mistaken as such.
