My Rock 24

Robyn's Rock
Robyn's rock is being sent to Oregon, Ohio!

This is my rock scanned at 20%.

This is my rock scanned 100%.

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

This is my thumb beside the rock under the microscope.

Description

	The color of my rock is black and red.
	My rock is seven centimeters long.
	There are four edges on my rock.
	I can not scratch my rock with my nail.
	There are no crystals.
	My rock is dull.
	My rock is the same size as Gina's but mine is heavier.
	When I took the rock and scratched it on the board it was white.
	My rock shape is oval.