Does this contain grit? Do I need to buy that separate?

This was a birthday gift for a 8 year old boy. He loved it as the rocks and fossils were easily identified and he loves his rocks. It is not a polishing device. So you do not need grit. I have seen where National Geographic does offer a small rock polishing kit.

Are any of these toxic or radioactive?

None of the Rocks are Radioactive or Toxic but I don't recommend that you were to eat them. They wouldn't be put in to a kids collection if they were. Plus Radioactive Rocks glow with a black light. So they would be vary easy to spot.

do you actually dig/uncover the fossils?

No, our NATIONAL GEOGRAPHIC Rocks & Fossils Kit is not a dig kit. This is a beginners rock collection.

Does this come with any doubles of rocks/stones? Or is it a large variety?

It comes with a couple duplicates as far as the little rocks go, but it has only one unique fossil. There is a large array of different stones. Definitely worth the buy.

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NATIONAL GEOGRAPHIC Rock Collection Kit for Kids – 300+ Piece Crystals and Gemstones Set Includes Geodes, Rocks and Minerals Science Kit for Kids, A Geology Gift for Boys and Girls

NATIONAL GEOGRAPHIC Rock Collection Kit for Kids – 300+ Piece Crystals and Gemstones Set Includes Geodes, Rocks and Minerals Science Kit for Kids, A Geology Gift for Boys and Girls

Product ID: 166752739

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Details

Size
23.5 x 16 x cm
Brand
Blue Marble
Theme
Geology
Age range (description)
6 years and up
Item dimensions L x W x H
23.5 x 16 x

💎300+ genuine crystals & minerals

🔍Includes magnifying glass for close-up exploration

🪨2 premium geodes to crack open

Description

💎 Unlock the world’s hidden gems—your ultimate geology adventure starts here!

DISPLAY EXPLORE - Store safely in the included bag and examine every detail with the handy magnifying glass.
EPIC ROCK COLLECTION - Over 300 authentic specimens from around the globe to fuel your inner geologist.
CRYSTAL TREASURE HUNT - Crack open 2 dazzling geodes for a hands-on discovery experience that sparks curiosity.
AWARD WINNING STEM FUN - Created by Blue Marble, Toy of the Year winner, blending education with imagination.
EXOTIC MINERAL VARIETY - Includes rare gems like amethyst, tiger’s eye, and snowflake obsidian to elevate your collection.

The NATIONAL GEOGRAPHIC Rock Collection Kit offers over 300 authentic rocks, minerals, and crystals, including two geodes to crack open, perfect for kids 8+ to explore geology hands-on. This award-winning STEM kit includes a magnifying glass and storage bag, making it an educational and collectible treasure trove designed to inspire curiosity and creativity.

Specifications

Product Dimensions	23.5 x 16 x 5.51 cm; 890 g
Manufacturer recommended age	8 years and up
Item model number	NGRMF200
Educational Objective(s)	STEM
Language:	English
Number of pieces	200
Assembly Required	No
Batteries Required?	No
Batteries included?	No
Material Type(s)	Rock
Remote Control Included?	No
ASIN	B07TNNCSJD

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