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

Excellent selection of common minerals in their natural state.Size of rocks is sufficient for examination and identification.Good variety of igneous, sedimentary, and metamorphic rocks.Info sheet has relevant info for each rock.Well suited for middle school, high school, and first year college geology.A better magnifier is recommended.

My 5 year-old son loves this, along with the book that comes with it.

The kit was informative and a great way to tie in learning about different types of rocks. I do wish the samples would have been larger though.

Great for starting a rock collection, whether for a child or an adult.

A great gift for kids interested in rocks! Our niece loved it!

Bought this as a present fir my son. We both like these a lot. Smooth, colorful stones.

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.

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.