---
product_id: 341852508
title: "National Geographic Rock Tumbler Machine - Amazing Gemstone Polishing Machine with Authentic Grit, Stones and Crystals | STEM Educational Rock Polisher Hobby Kit Gifts for 8+ Year Old Boys and Girls"
brand: "national geographic"
price: "1030.39 DT"
currency: TND
in_stock: true
reviews_count: 8
category: "National Geographic"
url: https://www.desertcart.tn/products/341852508-national-geographic-rock-tumbler-machine-amazing-gemstone-polishing-machine-authentic
store_origin: TN
region: Tunisia
---

# 9 gem varieties included Auto shutoff timer 4 grit grades for perfect polish National Geographic Rock Tumbler Machine - Amazing Gemstone Polishing Machine with Authentic Grit, Stones and Crystals | STEM Educational Rock Polisher Hobby Kit Gifts for 8+ Year Old Boys and Girls

**Brand:** national geographic
**Price:** 1030.39 DT
**Availability:** ✅ In Stock

## Summary

> 💎 Turn rocks into treasures—because your collection deserves to shine!

## Quick Answers

- **What is this?** National Geographic Rock Tumbler Machine - Amazing Gemstone Polishing Machine with Authentic Grit, Stones and Crystals | STEM Educational Rock Polisher Hobby Kit Gifts for 8+ Year Old Boys and Girls by national geographic
- **How much does it cost?** 1030.39 DT with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/341852508-national-geographic-rock-tumbler-machine-amazing-gemstone-polishing-machine-authentic)

## Best For

- national geographic enthusiasts

## Why This Product

- Trusted national geographic brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Gift with Impact:** Support science education—27% of proceeds fund the National Geographic Society.
- • **STEM-Powered Fun:** Engage young scientists with a full-color guide that makes geology exciting and accessible.
- • **Shine Like a Pro:** Transform ordinary rocks into dazzling gemstones with 9 authentic stones and crystals.
- • **Quiet & Convenient:** Noise-reducing, leak-proof barrel with auto shutoff for stress-free, mess-free polishing.
- • **Effortless Polishing:** 4 grades of grit ensure flawless finishes every time—no experience needed.

## Overview

The National Geographic Rock Tumbler Machine is a complete STEM hobby kit designed for kids 8 and up, featuring 9 varieties of authentic stones, 4 grit grades for professional polishing, and a quiet, auto-shutoff design. It includes an educational guide to inspire budding geologists and supports the National Geographic Society with every purchase.

## Description

National Geographic Rock Tumbler Machine - Amazing Gemstone Polishing Machine with Authentic Grit, Stones and Crystals | STEM Educational Rock Polisher Hobby Kit Gifts for 8+ Year Old Boys and Girls : desertcart.co.uk: Outlet

Review: My daughter seems happy with it. - Quite noisey as you would expect. Easy to use.
Review: Happy Customer - This rock tumbler is exactly as we hoped . We have polished stones with it and are very happy

## Features

- EXTRAORDINARY POLISHED GEMSTONES - Become a pro rock tumbler and bring an amazing shine to everyday rocks with this National Geographic Kids Kit! Our jewellery making kit includes 5 fastenings so kids can make all of their friends and family stunning handmade keepsakes!
- TUMBLING MADE EASY - Each stone polishing machine kit comes with everything they need to create beautifully polished gemstones! These polishing machines are packed with 9 varieties of included gems and 4 grades of grit to kickstart your kids' precious rock collection.
- FASCINATING STEM HOBBY - Invite them to take up a hobby in the world of geology with our rock polisher machine! Each educational science kits for kids age 8+ includes a full-colour learning guide with easy-to-follow instructions to help young scientists learn all about gemstones.
- PERFECT GIFT - This no-fuss stone tumbler polisher machine is ideal for the budding scientist in your life. Smart features like the auto shutoff timer and noise-reducing leak-proof barrel make them convenient and cool presents for 8+ year olds!
- NAT GEO SCIENCE KITS - Explore the expansive range of high quality STEM science kits from National Geographic, each containing everything necessary for your budding scientist's experiments. 27% of the licensing proceeds of each purchase give back to the fantastic National Geographic Society.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B09B18PJNT |
| Assembly Required | No |
| Batteries Required? | No |
| Best Sellers Rank | 203,065 in Toys & Games ( See Top 100 in Toys & Games ) 2,121 in Educational Science Kits |
| Colour | Multicolor |
| Customer Reviews | 4.3 4.3 out of 5 stars (119) |
| Date First Available | 5 July 2021 |
| Educational Objective(s) | Creative Skills, Hand-Eye Coordination, STEM |
| Item model number | 37137 |
| Manufacturer recommended age | 8 years and up |
| Material Type(s) | Plastic |
| Product Dimensions | 22.8 x 15.2 x 15.2 cm; 1.18 kg |
| Release date | 5 July 2021 |

## Product Details

- **Age range (description):** 8 years +
- **Brand:** National Geographic
- **Item dimensions L x W x H:** 22.8 x 15.2 x 15.2 centimetres
- **Size:** Mittel
- **Theme:** Geology

## Images

![National Geographic Rock Tumbler Machine - Amazing Gemstone Polishing Machine with Authentic Grit, Stones and Crystals | STEM Educational Rock Polisher Hobby Kit Gifts for 8+ Year Old Boys and Girls - Image 1](https://m.media-amazon.com/images/I/71+bKTwL27L.jpg)
![National Geographic Rock Tumbler Machine - Amazing Gemstone Polishing Machine with Authentic Grit, Stones and Crystals | STEM Educational Rock Polisher Hobby Kit Gifts for 8+ Year Old Boys and Girls - Image 2](https://m.media-amazon.com/images/I/71Id2W9U35L.jpg)
![National Geographic Rock Tumbler Machine - Amazing Gemstone Polishing Machine with Authentic Grit, Stones and Crystals | STEM Educational Rock Polisher Hobby Kit Gifts for 8+ Year Old Boys and Girls - Image 3](https://m.media-amazon.com/images/I/817cGUlcrFL.jpg)
![National Geographic Rock Tumbler Machine - Amazing Gemstone Polishing Machine with Authentic Grit, Stones and Crystals | STEM Educational Rock Polisher Hobby Kit Gifts for 8+ Year Old Boys and Girls - Image 4](https://m.media-amazon.com/images/I/81GaqH+rNGL.jpg)
![National Geographic Rock Tumbler Machine - Amazing Gemstone Polishing Machine with Authentic Grit, Stones and Crystals | STEM Educational Rock Polisher Hobby Kit Gifts for 8+ Year Old Boys and Girls - Image 5](https://m.media-amazon.com/images/I/81UUpktn6WL.jpg)

## Available Options

This product comes in different **Style** options.

## Questions & Answers

**Q: Does this set have the upgraded barrel with the rubber lining?**
A: We can confirm that this has a thick rubber black lining.

**Q: What happens when I turn 84? Kit is only suitable for the ages 8 to 83!**
A: Lol! That’s about the level of some of the questions that people ask on here sometimes!!! 
When I reach 84, I’ll let you know what happens.

**Q: Can you tumble any rock? If so why do they give you starter rocks?**
A: Yes - Rock tumbling is tons of fun for children and adults of all ages and promotes an interest in geology and science - as well as providing an excellent motivation to get out there and explore the natural world in pursuit of your own rocks to tumble and learn about.

**Q: How much would this cost to run for a full cycle, as I believe this can often take days? What is the wattage?**
A: I don’t know the wattage but on the box it’s input 240volts output 12 volts. You’d need it on for 5 days or so

## Customer Reviews

### ⭐⭐⭐⭐⭐ My daughter seems happy with it.
*by M***T on 13 January 2022*

Quite noisey as you would expect. Easy to use.

### ⭐⭐⭐⭐⭐ Happy Customer
*by N***R on 3 January 2022*

This rock tumbler is exactly as we hoped . We have polished stones with it and are very happy

### ⭐⭐⭐⭐ Great tool for geology fans...
*by N***S on 23 January 2024*

This requires patience, a separate room and brute strength! Let me start with the positives. Your boring, dusty rocks will be transformed into beautiful, shiny rocks in a variety of colours perfect for jewellery making and gifting to friends. It isn't a quick activity; a full cycle will take a month to reach the finished product. The tub is incredibly difficult to open; children won't be able to do this on their own. It is NOISY. The rock holder crashes the stones around and there is no let up, the further into the gritting process, the louder it gets and I mean LOUD. We had to keep it in the utility room and could still hear it upstairs. All in all, a great gift, just remember to eat your spinach and buy ear plugs alongside it! We have multiple additional packs of stones but will give it a break in between the next batch!

## Frequently Bought Together

- National Geographic Rock Tumbler Machine - Amazing Gemstone Polishing Machine with Authentic Grit, Stones and Crystals | STEM Educational Rock Polisher Hobby Kit Gifts for 8+ Year Old Boys and Girls
- My Book of Rocks and Minerals: Things to Find, Collect, and Treasure
- NATIONAL GEOGRAPHIC Rock Tumbler Refill – 453g Mix of Rough Gemstone Rocks for Rock Polishers, Includes 5 Jewellery Fastenings and Rock Polishing Grit, Works with All Rock Tumblers

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*Product available on Desertcart Tunisia*
*Store origin: TN*
*Last updated: 2026-02-10*