Bests & Worsts Reviews from Amazon

This toy was really better than I expected. I purchased one for both my 8 and 5 year old. They started out chipping away little pieces of the hard outer plaster . After a while, my daughter got a container of warm water and realized that the water dissolved the plaster just enough to make their hammering/sawing work a bit easier. They were so excited to extract each crystal and looked at them with the magnifying glass and had a wonderful time exploring the differences/colors/textures. This simple toy kept them busy for about an hour 1/2 and they each have the 8 crystals to keep and enjoy. Would recommend highly.