National Geographic Break Open 2 Geodes Kit Review

My sons love STEM toys, especially T who is 9 and loves to explore the world around him. The new STEM educational kits from Bandai are a great way to teach children about fascinating subjects with exciting experiments from their The National Geographic range. There's so much out there for children to discover and learn about.

And that's why, I am happy to announce that we've been chosen as Bandai STEM Ambassadors and for the next few months to show off this amazing range. This, our second month, I'll be talking about the National Geographic Break Open 2 Geodes Kit.

Geology doesn’t get more exciting then breaking open rocks and finding crystal treasures and that's why the Break Open 2 Geodes set from Bandai are ideal for science loving children, who want to learn how crystals form inside rocks. 

Geodes can form with a variety of crystals inside and National Geographic has searched the globe to bring you the best variety of geodes to open up and explore. The National Geographic Break Open 2 Geodes set contains everything you need to break open two of your very own Geodes including two high-quality crystal filled geodes, safety goggles, display stand, and full-colour learning guide. All you will need to provide from home is a hammer and a chisel if you choose to use one. 

The kit is amazing as not only does it include geodes to break in to, but it also contains a handy leaflet that is packed full of useful information and images to help you identify your geodes once you break them open. 

When it comes to getting into the geodes, there are several ways in which you can open them, depending on how careful you want to be. If you want it to be a clean break into 2 halves, the kit suggests using a chisel and hammer to gently hammer the chisel onto the geode around the centre of the rock until you see it begin to crack. This method can take a long time, but would give you 2 halves rather than more smaller chunks. 

If you aren't too worried about your geode breaking into more pieces then you can just hit it with a hammer. This could make smaller chunks fly about so it's best to keep this contained, either by putting the geode in a sock before hammering it, or placing a towel over the top. 

T tried so hard to get into his geodes, the lighted of the 2 being the slightly easiest one to break. But it did take quite a few goes to actually get into it. We also didn't have a chisel small enough for T to hold so used a smaller flat-head screwdriver instead which actually worked quite well. 

Eventually the first one gave way, and opened up. We didn't quite manage to get 2 halves, but instead 3 pieces, which were all quite similar in size. The crystal instead was mostly clear with jagged parts, but was so shiny and pretty. A really great find, T was so excited to explore inside this rock. 

The second geode took so much longer. In the end, we just opted to covering it with a towel and hitting it as hard as we could with the hammer which did work to break it. This geode was so much different that the other. The crystal inside was darker, with a dark outline around the edge of it. 

It's so fascinating to open these rocks and see the different crystals that can form inside. Then looking through the booklet to work out which is which. T really enjoyed this geodes kit, even if it was very hard for him to get into. His new geodes on display in his bedroom with his favourite one on the display stand.

The kit is aimed at children aged 8+ and is priced at £9.99 which includes the two genuine geodes which I think is amazing value and ideal for those aspiring scientists and geologists. 


  1. I would have loved this as a child. Fun and educational.

  2. These are such great educational kits x

  3. My grandson would have fun with this.