Cosmic Dig Kit by Big Discoveries - Explore The Planets of The Solar System with Gem & Fossil Excavation Kits for Kids | STEM Toy Science Dig Kits with Gemstones for Boys and Girls

My son got five stones out of the Earth one including the fake blue diamond, i’m not sure how many are supposed to be inside. So be careful because when the chunks go flying, you may not realize there’s a stone in some of the pieces. At the end, I would take a hammer and break every little chunk that’s longer than about 3/4 of an inch just to be sure.It’s not terribly hard to break for my 12 year-old anyway, some of these types of things can be really hard but this one is good.

Good amount of large rocks.

Good fun for kids

My daughter loves rock collecting and is fascinated by all of the colors and shapes that can be dug up from the ground when we’re gardening. This dig kit looked right up her alley for some indoor fun. We chose Earth and although it appears small, sized somewhere between a baseball and softball, it is a fun activity to keep her hands and mind occupied. The tools included in the kit are definitely a one & done; especially the chisel that takes quite a beating. The plastic molded insert that holds Earth in place in the package doubles as a stand for chiseling. My daughter diligently worked through all of the clay until she found all 5 gems and stones. She was tickled to wash them up afterward and inspect them before adding to her collection. She’s 5 years old and was able to dig through the Earth without assistance. It’s definitely a bit easier if you use a little water spritzer to help soften the clay. While fun and educational, I do wish that the blue “diamond” was some sort of stone and not a plasticy gem. Overall, she really enjoyed it so I consider it $9.99 well spent!

Fun toy for my kids! They did need a little help as it was a bit challenging to get all the gems out. It was fun but messy!

Gems are all on one side so there's no real reason to dig.

As a parent of a 3 and 6 year olds, this kit definitely have us an afternoon worth of fun and excitement. The kids were certainly engaged the entire time was they awaited what mysterious treasure they would find. The curiosity and fascination of the digging aspect has led to my oldest wanting to become a geologist! The pieces they discovered are not super valuable in themselves, but the intrigue of the activity itself brings about so much additional value. Highly recommend for your young ones, as silly as it may seem. Great quality and nice looking gems came from this dig kit.

Not all the rocks are actually rocks. The blue "rock" which I'm assuming is topaz is actually just plastic. Weight and sharp corners clear indicators it's plastic