I can tell that my rock is metamorphic because it has five types of rock in it.  It is very bumpy.  It is really sparkly and shiny.  It is high on luster.  I named it Rocko!  It was probably a boulder pressured to put the kinds of rock together.

Rock Haiku

Rocko rocks great socks

You are sparkling, yeah dude

Rocko, you’re awesome