Blue Marble NATIONAL GEOGRAPHIC Break Open 10 Premium Geodes – Includes Goggles, Detailed Learning Guide & 2 Display Stands - Great STEM Science Gift for Mineralogy & Geology Enthusiasts of Any Age

Padrisimoooo mi hijo se divirtió muchísimo abriendolas!

Great set but be warned, these are quite hard to open. With the regular hammer, I probably had to hit it for a good 20min! I guess it attests to their authenticity

Great gift for a 5 year old rock lover who says he’s going to be a geologist. Nice size Geodes are a little hard to open without the help of an adult. A little messy, but worth it!

Wurde als Geschenk für einen 9 jährigen gekauft. Nach kurzem Zweifeln des Kleinen (Was soll ich mit ein Haufen Steine??), kam aber dann schnell Begeisterung auf, nachdem wir zusammen dann mit Meisel und Hammer die Steine vorsichtig geteilt haben. Manche Steine sind innerhalb 2-3 Minuten offen und sind auch von Kinder leicht zu öffnen. Die anderen, wesentlich härteren, sind nur durch ziemlich viel Kraft zu öffnen. Aber es geht. Wie gesagt, alles mit Hammer und Meisel :-)

Great activity! I bought this for my nephew’s 7th birthday. He loves crystals and I liked that this included an activity as well as the crystals themselves. Grandpa set up the kids (7 & 8) each with Their own hammer and goggles and they had such fun smashing them open! As an activity this gets 10/10. Glad I went for the 10 geodes, that gave them a good chance to keep busy for a while. I’d say the only downside was that all the crystals were the same colour - white - not like on the box where all the beautiful colours were shown. So that was a bit disappointing but I guess you can’t tell what’s inside by looking at the rock. All the same, a fun activity for the kids and I’d recommend this.