National Geographic Break Open 10 Geodes and Explore Crystals Science Kit NGGEO10 [並行輸入品]

Padrisimoooo mi hijo se divirtió muchísimo abriendolas!

Un coffret bien rempli avec des géodes de bonnes tailles. Pas encore ouvertes.

We have only opened the smallest geode using the pointed end of the tool shown in the picture. He found it easy to open. However, we tried to open one of the larger ones, but it proved to be more challenging. I’m glad I bought the tools because using a hammer alone wouldn’t have worked well. We’re excited to open the rest of them. I did not find the process messy. Updated 3/16/26 One geode was solid. My son lost interest before I realized it was solid because he was not able to crack it open. I suggest if one seems too difficult, move on and return to it last. I still recommend this; it was a fun activity, plus the sparkly geodes are easy to display and make a great keepsake. Hope this is helpful!

Great set but be warned, these are quite hard to open. With the regular hammer, I probably had to hit it for a good 20min! I guess it attests to their authenticity

We bought this for our son. He really looked forward to opening the geodes. The instructions told us to be gentle with our hammer and chisel. This was relevant for one of the geodes. The crust was thin, just like in the picture. Two of the others were almost entirely closed up on the inside. The last, really pretty, was filled up halfway. + One of them was beautiful. + One was like in the pictures and suitable for the instructions. - Two were almost grown solid, needed much more force to be opened than described - The fun factor ended soon because of the thickness of the stones.