What is the method of how to open them? Do you need to have a separate tool for that?

The best way to open them is to take a large file & carefully cut a groove around the Geode along any depressions in the shape. Place in on a towel on a concrete floor. Be sure to put on safety glasses! Take a large chisel and place it in the groove. Strike the end of the chisel with a hammer to break the Geode open. Be careful everyone standing near has their safety gasses on as well!

Can use a sharp,big knife or if not, what do you use

Please do not even consider attempting this with a knife. That is an E.R. trip in the making. We were quite successful with a hammer and wide chisel.

Does the item include a hammer?

If you don't already have a hammer, this item is not for you.

They are real just not real impressive. You're better off to buy bigger geodes online. The kit has nothing spectacular you need. My package was full of solid rocks. Took a 5 lb sledge to get the apart. 100% waste of money.

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Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

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National Geographic (ナショナルジオグラフィック) ブレイクオープンジャンボジオード 5個 - 地球科学キットプレミアム5個付き特大ジオードクリスタル付きゴーグルディスプレイスタンド科学ギフト子供用楽しいもの (Amazon限定)

Product ID: 730787353

Details

Size
One Size
Brand
Blue Marble
Theme
Geology
Age Range (Description)
Kid
Item dimensions L x W x H
31 x 28 x 9.8

💎5 jumbo crystal geodes

📚Full-color learning guide

🛡️Includes safety goggles

B/.334

Duties & taxes included

In stock

Sold byAmazon PanamaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

💥 Crack, Discover, Display – Your Crystal Adventure Starts Here!

SHOW OFF YOUR FINDS - 3 elegant display stands let you showcase your unique crystal treasures like a true collector.
LEARN WHILE YOU PLAY - Dive into geology with a vibrant, full-color guide that makes science irresistibly fun and educational.
SAFETY MEETS DISCOVERY - Equipped with protective goggles so you can explore hands-on science worry-free.
UNLEASH YOUR INNER GEOLOGIST - Crack open 5 jumbo, tennis ball-sized natural geodes bursting with stunning crystals inside.
TRUSTED QUALITY FROM NATIONAL GEOGRAPHIC - Premium materials and expert design ensure a top-tier STEM experience backed by exceptional service.

The National Geographic Break Open 5 Jumbo Geodes Kit offers an immersive STEM experience with five large, natural geodes (tennis ball-sized) that reveal dazzling crystals when cracked open. Designed for kids 8+, it includes safety goggles, three display stands, and a full-color educational guide, combining hands-on fun with scientific learning. Perfect for young explorers eager to uncover Earth's hidden gems while proudly displaying their discoveries.

Specifications

Model Number	NGGEOJUM5
Number of Game Players	1
Batteries Required?	No
Batteries Included	No
Material Type(s)	Geode
Target Gender	Unisex
Manufacturer recommended age	8 years and up
Release date	January 23, 2023
Item model number	NGGEOJUM5
Product Dimensions	31 x 28 x 9.8 cm; 2.81 kg
ASIN	B0B69N5W93

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