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.

National Geographic Break Open 10 Premium Geodes Includes Goggles 2

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Description

💎 Crack open curiosity, reveal brilliance!

DISPLAY YOUR DISCOVERIES - Two elegant display stands let you showcase your sparkling finds like a true collector.
SAFETY FIRST DISCOVERY ALWAYS - Includes protective goggles so you can explore crystal formations worry-free.
AWARD WINNING QUALITY SUPPORT - From Blue Marble, Toy of the Year winner, backed by expert U.S. customer service.
STEM LEARNING MEETS HANDS ON FUN - Engage with geology through an immersive, educational experience perfect for curious minds 8+.
UNLEASH HIDDEN CRYSTAL TREASURES - Break open 10 hand-selected geodes revealing dazzling natural crystals inside.

The National Geographic Break Open 10 Premium Geodes kit offers a thrilling STEM experience for kids 8 and up, featuring 10 real natural geodes with a variety of crystal formations. The kit includes safety goggles, two display stands, a magnifying glass, and a 16-page full-color learning guide to deepen geological knowledge. Developed by award-winning Blue Marble, this hands-on science set combines education, creativity, and family fun, making it a standout gift for young explorers and aspiring geologists.

Specifications

ASIN	B0160JB7IS
Age Range Description	8 years and up
Best Sellers Rank	#1,127 in Toys & Games ( See Top 100 in Toys & Games ) #9 in Educational Science Kits
Brand Name	Blue Marble
Customer Reviews	4.5 out of 5 stars 32,228 Reviews
Educational Objective	STEM
Global Trade Identification Number	00851456006470
Included Components	10 Premium Quality Geodes, Display Stand, Learning Guide, Magnifying Glass, Safety Goggles
Is Assembly Required	No
Item Dimensions	2.75 x 7.75 x 12 inches
Item Type Name	Display Stands - Great STEM Science Gift for Mineralogy & Geology Enthusiasts of Any Age
Item Weight	2.14 Pounds
Manufacturer	Discover with Dr. Cool
Manufacturer Maximum Age (MONTHS)	1188.0
Manufacturer Minimum Age (MONTHS)	96
Manufacturer Part Number	NGGEO10
Manufacturer Warranty Description	We're proud to make the highest quality products which are backed by exceptional service.
Material Type	Crystal Geodes
Model Number	NGGEO10
Set Name	10 Geodes Kit
Size	Basic
Sub Brand	National Geographic
Theme	Science
UPC	851456006470
Unit Count	1.0 Count

Reviews

S**S

18.09.2025

T**E

3.11.2025

H**N

8.01.2026

L**Y

1.05.2026

C**N

21.03.2026

S**9

5.03.2026

H**R

16.02.2026

A**Y

3.01.2018

K**O

25.01.2026

C**N

31.03.2022

J**S

28.12.2025

W**L

25.11.2025

A**0

28.05.2018

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Buy anything from 5,000+ international stores. One checkout price. No surprise fees. Join 2M+ shoppers on Desertcart.

Rp1442378

Duties & taxes included

In stock

Sold byAmazon IndonesiaDelivered 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 Indonesia.

Secure transaction

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- 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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