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This was a particularly nice "dig for it" set for my kids. Usually you get either lame toys or some rocks that are less interesting, but this set had some pretty polished as well as crustral shaped gems inside that my kids found very compelling. They worked together on it, one carving and one spritzing with water, and shared the gem bounty to put in their fairy garden outside.
The chunk of sandy rock was easy for the kids to dig into (we soaked it briefly first, and used water spray), and kept them entertained about 45 minutes. They also were interested in learning about the gemstones they received, so that was fun to include some teaching in it.
Overall this is a nice version of this type of toy.
The crystal mining kit is perfect for my six year old. Any little one would be lucky to have it. Comes with a Mallet! I love that it’s different than the typical mining for dinosaur bone kits. Educational as well.