Hours of fun learning about tumbled rocks and minerals!
This kit includes a glossy, full color poster (about 8" x 11.5") of common mineral and stone types, and about 80-120 tumbled pebbles of various minerals (avg 0.2" - 1.0").
You get to match them up! Not all the minerals shown on the poster are included in the tumbled pebbles, and there are duplicates in the tumbled pebbles.
Choking hazard, not for small children!