National Geographic Break Open 10 Premium Geodes – Includes Goggles & 2 Display Stands - Great STEM Science Kit, Geology Gift for Kids, Break Your Own Geodes with Crystals
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Availability:
Only 5 left in stock, order soon!
Arrives
Friday, Dec 19
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Style: 10 Geodes Kit
Features
- DISCOVER CRYSTAL TREASURE - Break open these rocks to reveal amazing crystals inside! Geology doesnt get more exciting than breaking open rocks and finding crystal treasures. This great STEM activity makes an excellent gift for girls and boys!
- COLORFUL VARIETY Geodes can form with a wide variety of crystals inside. These geodes have been hand-selected to bring you the best variety available.
- 100% NATURAL GEODES These real specimens may be as big as a tennis ball, or as small as a ping-pong ball. Kids will love the thrill of cracking them open to see the natural beauty inside. This STEM activity emphasizes fun and discovery!
- 16 PAGE FULL-COLOR LEARNING GUIDE Youll learn all about the fascinating science behind how geodes are formed in the detailed, full-color Learning Guide. National Geographic educational toys make science and learning fun, and are the perfect STEM gifts for boys and girls!
- AWARD-WINNING PRODUCTS - Blue Marble, winner of the Toy Association's prestigious Toy of the Year Award, proudly develops products that foster education, imagination, and creativity, with a U.S. support team to ensure a stellar experience!
Product Dimensions: 2.75 x 7.75 x 12 inches
Item Weight: 2.14 pounds
Item model number: NGGEO10
Manufacturer recommended age: 8 years and up
Is Discontinued By Manufacturer: No
Release date: January 1, 2011
Department: Unisex
Manufacturer: Discover with Dr. Cool
Frequently asked questions
The kit includes 10 premium geodes, a pair of safety goggles, and display stands. It is designed to provide an educational and fun experience for children interested in geology and science.
The kit is recommended for kids aged 8 and above, due to the need for using a hammer or other tools to break open the geodes, as well as the presence of small parts and choking hazards.
Safety goggles should be worn to protect eyes. Place the geode inside a sock or cloth to prevent fragments from scattering and gently tap it with a hammer until it breaks open to reveal the crystals inside.
Kids can learn about geology, crystal formation, and earth science. They'll get hands-on experience with rock and mineral properties, and the excitement of discovery as they uncover the unique crystal formations within each geode.
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🚀 Abunda's Overview
This is our summary and key points to consider based on customer reviews.
The geode kit appears to be an exciting and engaging product for people of all ages, with customers reporting a lot of fun while cracking open the rocks. It offers a sense of discovery, unveiling beautiful crystal formations inside. However, buyers should be prepared with the right tools and safety gear, as the process can be quite challenging without proper preparation.
Pros
- 🎉 Provides great entertainment and educational value for both kids and adults.
- 💎 Geodes are beautiful and rewarding to open, revealing intriguing crystal formations.
- 🔨 Cracking the geodes can serve as a stress relief and engaging physical activity.
- 📚 Includes a learning guide for educational purposes.
Cons
- ⚒️ Requires specific tools like a chisel or vice for efficient cracking, which may not be readily available.
- 🧒 May be too difficult for children to crack without adult assistance.
- 🔊 The process can be loud and messy, potentially limiting where it can be done without causing disruption.
- 🚫 Some rocks might be solid and disappointing when they can't be cracked open to reveal crystals.
Should I Buy It?
If you're intrigued by geology or looking for a unique hands-on activity, this geode kit is worth purchasing. It's particularly recommended for those who appreciate a bit of challenge and have an interest in natural science. However, be sure to manage expectations and prepare the necessary safety equipment and tools to fully enjoy the experience.
Style: 4 Geodes Kit
The media could not be loaded. We recently purchased this geode kit to do with the family as a Christmas gift! and it exceeded all our expectations! The kit included everything needed for a fantastic rock-breaking adventure: 4 rocks to smash and/or chisel, clear instructions, protective glasses, and a magnifying glass to examine the treasures within. We were thrilled to discover 3 amazing geodes, each with beautiful, sparkling crystals inside. One of the 4 rocks turned out to be a solid piece of crystal, which, while smaller than the rest, was still a delightful surprise and not at all a deal breaker. We used the chisel method for two of them and had to use the towel and smash method for the hard to open ones. Our 8 y/o kid absolutely loved the experience! This kit provides an excellent hands-on learning opportunity, perfect for children and adults alike. Overall, a wonderful purchase that brought joy and excitement for family fun. Highly recommend for anyone interested in geology or just looking for a fun and educational activity. Will buy again for sure.
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Reviewed in the United States on December 29, 2024 by Noah C. Vogel Noah C. Vogel
Style: 5 Jumbo Geodes Kit
Best box of geodes I've ever ordered and I've ordered quite a few. 5 different shapes. 3 different colors inside. Super fun to break open
Reviewed in the United States on December 11, 2025 by Michael D Taylor
Style: 10 Geodes Kit
The National Geographic Break Open 10 Premium Geodes kit is an absolute hit for kids who love science and exploration! I bought this as a gift, and it exceeded all expectations. The kit comes with 10 geodes, safety goggles, and 2 display stands, making it a complete hands-on geology experience. Opening each geode is thrilling — the surprise of discovering sparkling crystals inside never gets old! The geodes vary in size and crystal type, which keeps it exciting for kids as they break each one. The included instructions are clear and easy to follow, and the goggles are a thoughtful safety addition that makes the activity worry-free. This kit is educational, fun, and encourages curiosity about geology, STEM, and natural science. It’s perfect for home experiments, science parties, or a unique gift for young explorers. Durable, well-packaged, and endlessly engaging
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Reviewed in the United States on November 3, 2025 by tara speece
Style: 10 Geodes Kit
I read many reviews about this product before finally deciding to choose it over other options. (I always read the 1's, as well as the 5's). Ultimately, I selected the National Geographic product on faith in their reputation over the years. But the reviews also played a significant role. Many/most of the low ratings centered around the size ("too small" being a common complaint), difficulty of breaking, and broke into many pieces. The complaint about size boils down to unrealistic expectations for the cost of the product. The dimensions of the box in the picture suggest that the samples would not be more than about two inches in diameter. The price reinforced that conclusion. Large geodes aren't especially common, and the price asked for them reflects that. The difficulty in breaking them and the shattering complaints are related. Channeling my inner Forrest Gump, this product is like a box of chocolates: you never know what you are going to get. Indeed, several of the pieces are solid throughout, are agates or concretions; it's essentially impossible to know in advance which are partially hollow and which are solid throughout unless one is familiar with the provenance of the samples. General inferences can be drawn. Given two pieces of similar size, the one with the lesser heft is more likely to be hollow than the other one. So if you have a kitchen scale (and OCD) you could, in theory, estimate which are hollow and which are solid by comparing the weights. The packaging is your friend in this regard--they have to pick pieces that are fairly similar in size to fill fixed-size boxes reasonably closely time after time. Given your hypothesized "hollowness," you can adjust your breaking strategy accordingly. (Note to the statistically inclined: a Bayesian approach to the problem, rather than a Frequentist one, will serve you better). Unless you have a tile saw (and a face shield and sturdy gloves in addition to the supplied safety glasses), you will need a hammer and a chisel to break your specimens. You can find a chisel for trimming concrete blocks and bricks at any hardware store. Do yourself a favor and get one with the guard that prevents you from breaking your metacarpals if you miss the chisel head. Take the pieces you suspect are hollow and place them on a padded surface like a folded up dishrag, place the chisel lightly on the specimen and tap with a hammer--softly at first then increasing in force as necessary. Do not press the chisel forcefully on the surface. If truly hollow, excessive force applied by the chisel has the same outcome as just whacking the stone with the hammer--it will shatter into many pieces. Be patient. What you want to happen is for the shell to crack gradually like an egg. Repetitive hits of lesser force work better than one "mother of all blows" in this regard. The specimens you believe to be solid or mostly so should still be placed on the padded surface (force applied is thereby focused on the contact between the rock and the chisel, not at both the top and broadly on the bottom of the specimen. My experience with these specimens in the product was that one could strike harder earlier with strong applied force of the chisel. Agates are commonly silicate filled, which means that they commonly fracture cleanly across the diameter of the specimen. The bigger the geode, the greater the cost, and the more interesting the mineralogy, the greater the cost. Both criteria are in play with the NatGeo product--they are relatively small with common mineral assemblages. This past May I was at Put in Bay near Sandusky, Ohio. Close by is Heineman's Winery, where you can walk into the world's largest geode. Check out their website if you plan to be in the area. I have an MA in geology (though I've been a statistician by experience for over 30 years, which accounts for my Bayesian bent) and the geode (small cave??) was extremely impressive! Individual crystals weigh tens of pounds. There are nearby places where you can buy geodes up to several inches of diameter and have them cracked using a chain that encompasses the entire diameter of your selected specimen. Short having the saw, the chain method is next best; the force is applied "evenly" around the circumference--and you still get the kick of seeing what is inside.
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Reviewed in the United States on December 24, 2016 by FDemmon
Style: 10 Geodes Kit
Christmas gift for 12 year old granddaughter. I think she will enjoy it.
Reviewed in the United States on December 8, 2025 by Mina
Style: 5 Jumbo Geodes Kit
The media could not be loaded. Extremely fun project! Must wear eye protection! Though, they are EXTREMELY hard to open. We read the directions and reviews in order to not shatter them. It took over an hour to open the bigger ones. Still unsuccessful with the smaller ones. We tried the hammer and chissle, drill, etc. We were very careful at the same time. I wished we had more colorful ones, but these still turned out beautiful!
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Reviewed in the United States on August 28, 2025 by Kari Kari
Style: 5 Jumbo Geodes Kit
The National Geographic Break Open 5 Jumbo Geodes was a fun and exciting activity, especially for kids who love science and exploration. Breaking them open was a blast, and the geodes that turned out well were really beautiful with fascinating crystal formations inside. However, not all of the geodes were impressive. A couple were mostly solid crystal structure with little to no inner cavity, which was disappointing considering the price and made all but one of them useless as display pieces. Despite that the images for this item displayed multiple colors of geode we received only plain white ones, I have no way of knowing if that is simply luck or what you should expect. Also, some were harder to break open than expected, the solid ones in particular gave our 10 year old extended periods of smacking them with a hammer to open. Overall, it's a fun, educational activity, but the results can be hit or miss. Great for curious kids, but don't expect all five geodes to be showstoppers. Out of all five, we got one good geode that we displayed.
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Reviewed in the United States on February 3, 2025 by Aubry Aubry