From my understanding the PET sparkles and polish make it look like a pearl but it truly is a solid. If you have one or see one, take the shine off and it will look like a solid.
--------------------
"Oh wow, its a scooner."
"Its not a scooner its a sailboat."
"A scooner is a sailboat stupidhead!"
"YOU KNOW WHAT?!? THERE IS NO EASTER BUNNY!!! OVER THERE THAT'S JUST A GUY IN SUIT!!!!!"