This is the rock scanned at 20%.

This is the rock scanned 100%.

This is the rock under the microscope at 10% magnification.

This is my thumb beside the rock under the microscope.

Description:

	Our rock looks like a crystal.
	We can scratch our rock with a nail.
	Our rock streaks white.
	Our rock can not be scratched with a penny.
	We can scratch our rock with our fingernail.
	Our rock's length is 3 cm.
	Our rock's circumference is 10 cm.
	Our rock is transparent.
	Our rock is glassy green.