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NATIONAL GEOGRAPHIC Break Open 10 Premium Geodes – includes Goggles and 2 Display Stands - Great STEM Science Kit, Geology Gift for Kids, Break Your Own Geodes with Crystals, Toys for Boys and Girls

4.5 4.5 out of 5 stars 34,060 ratings
Amazon's Choice highlights highly rated, well-priced products available to ship immediately.
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$23.99 with 20 percent savings
List Price: $29.99
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No Import Fees Deposit & $19.19 Shipping to France Details

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Price $23.99
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Estimated Import Fees Deposit $0.00
Total $43.18

Available at a lower price from other sellers that may not offer free Prime shipping.
Extra Savings Save 50% on Dartboard ASIN when you purchase 1 or more National Geographic Selection offered by Amazon.com. 1 Applicable Promotion
  • Save 50% on Dartboard ASIN when you purchase 1 or more National Geographic Selection offered by Amazon.com. Shop items
10 Geodes Kit
  • DISCOVER CRYSTAL TREASURE - Break open these rocks to reveal amazing crystals inside! Geology doesn’t 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 – You’ll 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!
  • HIGH-QUALITY EDUCATIONAL TOYS - We're proud to make the highest quality hands-on science toys, and all our products are backed by exceptional service. If your experience is less than stellar, let us know and we'll make things right!
› See more product details

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GobiDex Gemstones Dig Kit, Solar System Science Kit for Kids, Excavate 15 Real Gems, STEM Educational Space Toys Planet Collection Kit, Archaeology Geology Science Projects Gift for Boys&Girls Age 6+
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Customer reviews

4.5 out of 5 stars
34,060 global ratings

Customers say

Customers find the science fundamentals kit to be pretty inside and fun. They mention it's a great gift for anyone and perfect for kids who love rocks. However, some customers have reported that the nodule is extremely hard to crack open properly. Opinions are mixed on the quality, value for money, size, and crystal content.

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BeautyFunGift valueProduct qualityValue for moneySizeCrystal contentHardness
586 customers mention "Beauty"521 positive65 negative

Customers like the beauty of the science fundamentals kit. They mention it's very pretty inside, has beautiful light purple crystals, and the geode colors are great.

"...Gorgeous! We had 9 proper geodes and 1 rock. Not bad and he had fun smashing the rock too...." Read more

"...Four of the five rocks were beautiful geodes, one was just a nodule...." Read more

"...Otherwise it was a lot of fun and very beautiful… a bit messy but in a good way. BTW this was for my 40something husband… not just for kids." Read more

"...Beautiful crystals inside. We kept half of a stone, adding it to our rock garden and our grandson took the other half home with him...." Read more

527 customers mention "Fun"513 positive14 negative

Customers find the science fundamentals kit fun. They mention it's a good activity for young sons, and it keeps them busy for a while. Additionally, they like the book and pictures.

"My son loved this activity - great for rock/geode loving kids and those that like to smash things!..." Read more

"...Otherwise it was a lot of fun and very beautiful… a bit messy but in a good way. BTW this was for my 40something husband… not just for kids." Read more

"This was a birthday gift for an 8 yr old grandson. It was entertaining as well as educating . I bought the basic one last year..." Read more

"Fun to cut open, educational, and lucky to have...." Read more

329 customers mention "Gift value"319 positive10 negative

Customers like the gift value of the product. They mention it's a perfect gift for kids who love rocks and little scientists.

"overall great and unique gift. Got the jumbo set, one geode was already broke open but it was very pretty inside...." Read more

"Great gift and was fun to watch each get cut open" Read more

"...All of them had beautiful crystals inside, its a great gift for a kid into rocks or really any kid!" Read more

"Fun and a great gift! Most of the rock were white crystals but there was one that had blue-ish stone and a couple small pink/red-ish colors" Read more

524 customers mention "Product quality"288 positive236 negative

Customers have mixed opinions about the quality of the science fundamentals kit. Some mention it's amazing, impressive, and cool. Others say they were disappointed with the product, saying it was mediocre and unreliable.

"...a useful pair of eye protection glasses (please use!)..." Read more

"...And 2/4 were real geodes. But for $40 this doesn't seem worth it...." Read more

"...was extremely impressive! Individual crystals weigh tens of pounds...." Read more

"...ones but when each student only gets 1 and theirs is a dud, it is disappointing." Read more

305 customers mention "Value for money"173 positive132 negative

Customers have mixed opinions about the value for money of the science fundamentals kit. Some mention it's well worth the price, while others say it's not worth the money and has no uniqueness.

"...And we have more stones to split at a later date. Win/win. Worth the buy." Read more

"...The book will be nice to read together.Overall, not worth it for us, maybe only if you have a rock enthusiast?" Read more

"...She had a blast...worth the price for sure. Close supervision of course." Read more

"...There was nothing really special for the price that was paid." Read more

283 customers mention "Size"99 positive184 negative

Customers have mixed opinions about the size of the science fundamentals kit. Some mention they were not disappointed in the sizes, saying there was a good variety of sizes, most of them more than a couple of inches in length. However, others say the rest were small.

"...All the items were there. The geodes are fairly small, and this price was still more than they were worth, but there were 10 of them and there was..." Read more

"...5 Large geodes for a fun homeschool activity and we were not disappointed in the sizes...." Read more

"...The price reinforced that conclusion. Large geodes aren't especially common, and the price asked for them reflects that...." Read more

"The geodes are 4 very different sizes. The smallest one being just a rock with not much inside...." Read more

248 customers mention "Crystal content"84 positive164 negative

Customers have mixed opinions about the crystal content of the science fundamentals kit. Some mention the crystals are impressive, while others say they're just solid rocks.

"...All of ours were white crystals without much variation...." Read more

"...They do make a big mess but so worth it. The crystals in them were very nice we did get some colored ones. Instruction are in box...." Read more

"...One had a small lining of black but the crystal formations were abysmal and you had to squint to see the beginnings of formation...." Read more

"Cool but some rocks have nothing inside" Read more

834 customers mention "Hardness"94 positive740 negative

Customers find the rocks in the science fundamentals kit hard to crack open. They mention the nodule is extremely hard to crack and some crumble.

"...Definitely wear the eye protection because pieces do fly everywhere. So much fun for any kid who loves crystals or rocks!" Read more

"...The nodule was extremly hard to crack... Nothing my husband, a metal punch, and a handheld sledge couldn't handle!..." Read more

"...and turned out more of a solid crystal formation and was not able to be broken open (we are looking to get something to maybe cut them open)...." Read more

"...They were VERY hard and took a LONG time to break into them. I was frustrated, because the larger stones were the ones that were not hollow...." Read more

Buy the Used kits and save a little money
4 out of 5 stars
Buy the Used kits and save a little money
I bought the 10 Premium Geodes kit on a whim and because I was curious as to why geodes could be considered 'used', I sprung for the used kit to save a few dollars. That was a good decision as it was just an open box. All the items were there. The geodes are fairly small, and this price was still more than they were worth, but there were 10 of them and there was a bit of variety. Some turned out to be just quartz, with no cavity to speak of, but since this is nature, that's the risk we take and they are still very pretty. I cut these with my tile saw and I do not recommend breaking them with a hammer. Most of the ones I got would be smashed to small bits by a hammer, especially if wielded by an exuberant child. The crystals were all clear quartz, which was what I expected based on other reviews. We are using these for wedding favors so it was fine. If you are expecting to be wowed by mulicolored crystals you will be disappointed. The kit has a nice booklet with information on how geodes form, a completely worthless plastic magnifying glass (really, don't even bother with this. Use a real magnifying glass), a useful pair of eye protection glasses (please use!) and two basic stands in case you don't smash these rocks completely and want to display them. Clean them up with a little ammonia water and they will shine better. If you have a rock shop in your area, it may be more satisfying to go choose your own geodes. There are also a lot of other sellers on this platform and others who sell better quality. But this was a satisfying kit.
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Top reviews from the United States

Pam
5.0 out of 5 stars Great for kids
Reviewed in the United States on July 29, 2024
Style: 5 Jumbo Geodes KitVerified Purchase
These were awesome. Our kids absolutely loved them. They do make a big mess but so worth it. The crystals in them were very nice we did get some colored ones. Instruction are in box. We did drill a whole in one and it was easier to open up. Definitely wear the eye protection because pieces do fly everywhere. So much fun for any kid who loves crystals or rocks!
3 people found this helpful
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Jen
5.0 out of 5 stars Great fun and beautiful crystals!
Reviewed in the United States on August 13, 2024
Style: 10 Geodes KitVerified Purchase
My son loved this activity - great for rock/geode loving kids and those that like to smash things! They were not overly difficult to break (for him). Inside were mostly the clear crystals but we got a beautiful light purple and one that had black and white. Gorgeous! We had 9 proper geodes and 1 rock. Not bad and he had fun smashing the rock too. Great for learning to work with tools, safety, and appreciating nature. He's excited to look for geodes on our next road trip.
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Jen
5.0 out of 5 stars Great fun and beautiful crystals!
Reviewed in the United States on August 13, 2024
My son loved this activity - great for rock/geode loving kids and those that like to smash things! They were not overly difficult to break (for him). Inside were mostly the clear crystals but we got a beautiful light purple and one that had black and white. Gorgeous! We had 9 proper geodes and 1 rock. Not bad and he had fun smashing the rock too. Great for learning to work with tools, safety, and appreciating nature. He's excited to look for geodes on our next road trip.
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5 people found this helpful
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Elizabeth
5.0 out of 5 stars Worth it!
Reviewed in the United States on March 9, 2024
Style: 5 Jumbo Geodes KitVerified Purchase
I bought these as a fun project to do with my kids and they did not disappoint! Four of the five rocks were beautiful geodes, one was just a nodule. The nodule was extremly hard to crack... Nothing my husband, a metal punch, and a handheld sledge couldn't handle! We will polish the inside for a nicer look. The other rocks were realitively easy to open... My seven year old was even able to crack one! They recommend the sock method, but if you want nice clean breaks I would not go that route. All in all, I am very satisfied with the product we received and will buy again!
Customer image
Elizabeth
5.0 out of 5 stars Worth it!
Reviewed in the United States on March 9, 2024
I bought these as a fun project to do with my kids and they did not disappoint! Four of the five rocks were beautiful geodes, one was just a nodule. The nodule was extremly hard to crack... Nothing my husband, a metal punch, and a handheld sledge couldn't handle! We will polish the inside for a nicer look. The other rocks were realitively easy to open... My seven year old was even able to crack one! They recommend the sock method, but if you want nice clean breaks I would not go that route. All in all, I am very satisfied with the product we received and will buy again!
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11 people found this helpful
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C. Funk
4.0 out of 5 stars Really amazing
Reviewed in the United States on July 5, 2024
Style: 5 Jumbo Geodes KitVerified Purchase
Please wear the safety glasses (we did and were thankful as a piece of rock hit the glasses and could have been his eye) I gave it 4 stars because 2 of the 5 were felt extra heavy and turned out more of a solid crystal formation and was not able to be broken open (we are looking to get something to maybe cut them open). Otherwise it was a lot of fun and very beautiful… a bit messy but in a good way. BTW this was for my 40something husband… not just for kids.
One person found this helpful
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Coda’s mom
5.0 out of 5 stars Excellent fun!
Reviewed in the United States on September 7, 2024
Style: 5 Jumbo Geodes KitVerified Purchase
I bought these for my husband and our grandson (3). They had a great time hammering away on the rocks and revealing the crystals inside. While my grandson had fun using the hammer, in the end it took some concerted effort from my husband to split the stones. Beautiful crystals inside. We kept half of a stone, adding it to our rock garden and our grandson took the other half home with him. And we have more stones to split at a later date. Win/win. Worth the buy.
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Carol
5.0 out of 5 stars One of My Grandson's Favorite Things!
Reviewed in the United States on October 2, 2024
Style: 10 Geodes KitVerified Purchase
These geodes are great for getting children interested in geology and science. My grandson loves to smash these with a hammer. The generally break in just two pieces (sometimes three or more), and the revealed treasures help to spark creativity. For instance, my grandson did some studying about the different crystals he discovered in these geodes, and he made a video talking about them with great enthusiasm. He named the different types of crystals and some of their properties, also demonstrating how he opens the geodes. In short, this set is a great way to get a child interested in crystal science.
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Timothy Watkins
3.0 out of 5 stars 3 of 5 of the rocks weren't geodes
Reviewed in the United States on September 10, 2024
Style: 5 Jumbo Geodes KitVerified Purchase
The media could not be loaded.
 Three of the 5 rocks were not hollow. While they had pretty white crystals inside, they were not hollow. I knew when I started hitting on them with the hammer and chisel (recommended way according to instructions) that 3 weren't hollow. They were VERY hard and took a LONG time to break into them. I was frustrated, because the larger stones were the ones that were not hollow. I was hoping for some amazing crystal formations, but nope.
One person found this helpful
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Jay
5.0 out of 5 stars Great experience with grandaughter
Reviewed in the United States on October 3, 2024
Style: 10 Geodes KitVerified Purchase
Our grandaughter saw some geodes at a nature center and went gaga over them. So, I ordered these rocks and got her an appropriate sized REAL hammer to break them open. She had a blast...worth the price for sure. Close supervision of course.
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Top reviews from other countries

Translate all reviews to English
Rocky
5.0 out of 5 stars Great activity for kids and parents
Reviewed in Canada on February 13, 2024
Style: 10 Geodes KitVerified Purchase
The NATIONAL GEOGRAPHIC Break Open 10 Premium Geodes kit offers an exciting and educational experience for rock and mineral enthusiasts of all ages. Inside the kit, you'll find 10 geodes of varying sizes, each containing stunning crystal formations waiting to be discovered.

The geodes are carefully selected to ensure high quality and diversity, providing a range of colors, textures, and crystal formations to explore. With the included safety goggles and instructions, breaking open the geodes becomes a fun and safe activity that the whole family can enjoy.

Once cracked open, the geodes reveal beautiful and unique crystal formations, allowing users to marvel at the natural wonders hidden inside. The kit also includes an educational guide, providing fascinating information about geology, crystal formation, and the science behind these remarkable specimens.

The NATIONAL GEOGRAPHIC Break Open 10 Premium Geodes kit not only provides hours of entertainment but also offers valuable learning opportunities about the earth's geological processes and the beauty of natural crystals. It's a perfect gift for budding geologists, science enthusiasts, or anyone with a curiosity about the world around them. Overall, this kit delivers both fun and educational value, making it a fantastic addition to any collection.
One person found this helpful
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Arianne Girard Migneault
5.0 out of 5 stars Très impressionnant
Reviewed in Canada on September 9, 2024
Style: 5 Jumbo Geodes KitVerified Purchase
Très impressionnant bonne expérience à faire Avec les enfants!
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Another nane : )
5.0 out of 5 stars Excelente.
Reviewed in Mexico on January 23, 2024
Style: 10 Geodes KitVerified Purchase
Muy divertido. Ojo para abrirlo es necesario que ayude un adulto, pues las geodas hay que romperlas con martillo. Si lo haces con cuidado te quedan bonitas. Solo falta pulir las orillas.
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Cara
5.0 out of 5 stars So fun and beautiful!
Reviewed in Canada on December 27, 2023
Style: 4 Geodes KitVerified Purchase
I bought this for my son for Christmas and he absolutely loved it!
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M. Jean
5.0 out of 5 stars Joli
Reviewed in France on September 3, 2024
Style: 5 Jumbo Geodes KitVerified Purchase
Joli,
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