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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[ナショナルジオグラフィック]National Geographic Break Open 10 Geodes and Explore Crystals Science Kit NGGEO10 [並行輸入品]

Product ID: 730787352

Details

Age Range (Description)
Youth
Brand
Blue Marble
Item dimensions L x W x H
7 x 19.7 x cm
Size
Basic
Theme
Science

💎10 authentic crystal geodes

📚16-page full-color learning guide

🛡️Includes safety goggles & display stands

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$171.85

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Sold byAmazon British Virgin IslandsDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

💎 Crack open curiosity, collect brilliance!

LEARN LIKE A PRO - Dive into crystal science with a vibrant 16-page guide that makes geology accessible and fun.
STEM MEETS ADVENTURE - Engage curious minds with a hands-on geology experience that blends science and excitement.
SAFE READY TO EXPLORE - Complete kit includes safety goggles and tools, ensuring a secure and immersive learning journey.
DISPLAY YOUR DISCOVERIES - Show off your unique crystal finds with included stands—turn your collection into a conversation starter.
UNLEASH HIDDEN TREASURES - Break open 10 hand-selected natural geodes to reveal dazzling crystal formations inside.

The National Geographic Break Open 10 Geodes Science Kit offers an immersive STEM experience by providing 10 authentic natural geodes filled with colorful crystals. Designed for youth ages 8 and up, this kit includes safety goggles, display stands, and a detailed 16-page learning guide to educate and inspire budding geologists. Perfect for hands-on discovery, it combines fun, education, and safe exploration in one premium package.

Specifications

ASIN	B0160JB7IS
Age Range Description	Youth
Amazon Bestseller	#156,060 in Toys & Games ( See Top 100 in Toys & Games ) #199 in Earth Sciences & Geology Science Kits
Brand Name	Blue Marble
Customer Reviews	4.5 4.5 out of 5 stars (35,400)
Educational Objective	STEM
Global Trade Identification Number	00851456006470
Included Components	10 premium quality geodes, safety goggles, magnifying glass, display stand, learning guide
Is Assembly Required	No
Item Dimensions	7 x 19.7 x 30.5 cm
Item Type Name	DISPLAY STAND - A great STEM science gift for minerals and geology enthusiasts of all ages
Item Weight	971 g
Manufacturer	Discover with Dr. Cool
Manufacturer Minimum Age (MONTHS)	96.0
Manufacturer Part Number	NGGEO10
Material Type	Crystal Geode
Model Number	NGGEO10
Size	Basic
Sub Brand	National Geographic
Theme	Science
UPC	851456006470
Unit Count	1.00 Count

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