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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NATIONAL GEOGRAPHIC Break Open 5 Jumbo Geodes - Earth Science Kit with 5 Premium, 8-10 cm Geodes with Crystals, Goggles, Learning Guide & Display Stands, Science Gifts, Fun Stuff for Kids

Product ID: 475203817

Details

Age range (description)
8 years and up
Brand
Blue Marble
Item dimensions L x W x H
31 x 28 x 9.8
Size
28 cm x 31 cm
Theme
earth science

💎5 jumbo 8-10 cm natural geodes

🔬Includes magnifying glass & learning guide

🖼️3 display stands for crystal showcase

€ 221.12

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Sold byAmazon SlovakiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

💎 Crack open wonder, display brilliance, and own the science spotlight!

SHOW OFF YOUR TREASURES - Display your unique finds elegantly with 3 included stands—turn your discoveries into conversation starters.
EXPLORE SCIENCE HANDS ON - Dive into geology with a full-color learning guide and magnifying glass that bring crystal formation to life.
STEM FUN FOR THE WHOLE FAMILY - Perfect for kids 8+, this kit blends education and excitement, making science a shared adventure.
UNLEASH THE CRYSTAL HUNTER IN YOU - Break open 5 premium jumbo geodes, each the size of a tennis ball, revealing dazzling natural crystals inside.
TRUSTED QUALITY FROM NATIONAL GEOGRAPHIC - Backed by exceptional service and crafted for durability, this kit is a must-have for curious minds.

The NATIONAL GEOGRAPHIC Break Open 5 Jumbo Geodes kit offers five natural, 8-10 cm geodes packed with stunning crystals. Designed for kids 8 and up, it includes a magnifying glass, full-color educational guide, and display stands, making it a premium hands-on STEM experience that combines discovery, learning, and display in one high-quality science kit.

Specifications

ASIN	B0B69N5W93
Age Range Description	8 years and up
Best Sellers Rank	142,498 in Toys & Games ( See Top 100 in Toys & Games ) 1,386 in Educational Science Kits
Brand Name	Blue Marble
Customer Reviews	4.2 4.2 out of 5 stars (1,163)
Educational Objective	Geology understanding and crystal formation
Global Trade Identification Number	00810070621544
Included Components	Geodes
Is Assembly Required	No
Item Dimensions	31 x 28 x 9.8 centimetres
Item Type Name	Earth Science Kit with 5 Premium, Extra-Large Geodes with Crystals
Language	English
Manufacturer	JMW Sales, Inc.
Manufacturer Part Number	NGGEOJUM5
Manufacturer recommended age	8 years and up
Material Type	Crystal Geode Specimens
Model Number	NGGEOJUM5
Number of Items	5
Number of Packs	1
Set Name	National Geographic Open 5 Giant Geodes - Earth Science Kit
Size	28 cm x 31 cm x 9.8 cm
Sub Brand	National Geographic
Theme	earth science
UPC	810070621544
Unit Count	1.0 count

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€ 221.12

Duties & taxes included

In stock

Sold byAmazon SlovakiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Slovakia.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

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