You'll get one chunk similar to the ones in the pictures.
PLEASE NOTE-Obsidian is basically volcanic glass and as these chunks have been roughly chipped off a larger piece there are edges that potentially could be sharp so these are not suitable for children, and i'm afraid we take no responsibility for any damage done by these.
Your chunk will measure about 1.7cm x 2.7cm or slightly bigger.
These are perfect for doing a grid or layout!