XXTOYS Rock & Stone Collection 15 PCS with Collector Box, STEM Toy Science Kit Geology Mineral Specimens Gift Presents for Kid Geologists

The content was exactly as described. The rocks are on the smaller size, however the purpose they serve is just fine. Quality rocks, and comparable prices for other brands. Make a good gift for a kiddo interested in geology.

Perfect for my daughter’s school science project.

It was the best packed ever it came with big pieces I totally recommendRock science kit

My grandson is rock obsessed. This kit is helping him identify the rocks he collects. He's 5.

Bought this item for my daughter science project and it was a great collection of rocks and description of each. It made his project quite easy for us and we learned a lot from it.

The kit supposedly contains a sample of pumice rock. Pumice rock is light-colored and has lots of air pockets that cause it to float on water. However, the sample of "pumice" included in this kit is dark-colored and sinks when placed in water. Thus, there's no way it's real pumice rock. More likely it's scoria rock, which is often confused with pumice but does not float.That said, it's still good enough for classroom purposes and I doubt most students would even notice some of the samples are fake substitutes. And contrary to what other reviews said, all the samples in the 10 boxes I ordered had the diameter between a nickle and quarter.

Nice tiny set for kids who like collecting rocks.

Great way to learn with kids on the different rocks