---
product_id: 74202849
title: "National Geographic Hobby Rock Tumbler Bundle for Kids and Adults"
brand: "blue marble"
price: "971.78 DT"
currency: TND
in_stock: true
reviews_count: 13
category: "Blue Marble"
url: https://www.desertcart.tn/products/74202849-national-geographic-hobby-rock-tumbler-bundle-for-kids-and-adults
store_origin: TN
region: Tunisia
---

# 2.5 lbs raw gemstone & jasper mix 75% quieter noise-reduced barrel Durable motor built to last National Geographic Hobby Rock Tumbler Bundle for Kids and Adults

**Brand:** blue marble
**Price:** 971.78 DT
**Availability:** ✅ In Stock

## Summary

> 💎 Polish your passion, rock your world!

## Quick Answers

- **What is this?** National Geographic Hobby Rock Tumbler Bundle for Kids and Adults by blue marble
- **How much does it cost?** 971.78 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/74202849-national-geographic-hobby-rock-tumbler-bundle-for-kids-and-adults)

## Best For

- blue marble enthusiasts

## Why This Product

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

## Key Features

- • **STEM-Approved Fun:** Engage curious minds with an award-winning kit designed to inspire learning and creativity in kids and adults alike.
- • **Set & Forget Magic:** One-touch timer and automatic shutoff let you focus on life while your stones transform into treasures.
- • **Sparkle Your World:** Transform rough stones into dazzling gemstones with ease and style.
- • **All-Inclusive Gem Lab:** Comes complete with 4 polishing grits, sifter, learning guide, and 2 pounds of raw gems—everything you need to start polishing immediately.
- • **Whisper-Quiet Creativity:** Enjoy peaceful polishing with a noise-reduced, leakproof rubber barrel that’s 75% quieter than competitors.

## Overview

The National Geographic Hobby Rock Tumbler Kit is a durable, noise-reduced rock polisher designed for ages 8 and up. Featuring a powerful motor, leakproof rubber barrel that cuts noise by 75%, and 2.5 pounds of raw gemstones and jasper, this STEM-focused kit includes all necessary grits, tools, and guides to turn ordinary rocks into sparkling gems. Award-winning and easy to use, it’s perfect for educational fun and creative exploration.

## Description

Buy National Geographic Hobby Rock Tumbler Bundle for Kids and Adults | Noise-Reduced Barrel, 2.5 Lbs. Rough Gemstonesr, 4-Stage Grit, GemFoam Polish, Rock Polisher, Geology Hobby: Rock Tumblers - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: Great for beginners - I have never done rock tumbling before but became interested when I found some quartz at my mother's house. She lives outside Marble Falls, Texas. I shopped around quite a bit and based off reviews alone, this was the best machine for beginners and for the price. I initially bought the one available at my local Hobby Lobby and it would leak a little water and get the belt wet. The belt system used runner teeth and after just one day of use the belt was no good and the machine would not run. With this brand the belt is smooth and operates based off tension just like the pullies in your car. The rubber barrel helps eliminate most noises. The motor is quiet, the only noise is from the machine is it vibrating on a solid surface. Mine walks a little, so make sure you have it on a level surface. I waited to do my review until I had used the machine a while. I have done two separate rounds with it. Everything runs great still after more than 2 months of continuous use. I can see that the belt will wear out before anything else. There are little flecks of the belt around the area the machine sits in. I believe there is some plastic on the pullies that may be wearing on it. It does come with an extra belt though. I am currently tumbling Tiger's Eye rocks. The pack comes with a variety of rock types. I am tumbling like rocks together just to make sure everything wears at the same rate. My only real complaint is that in all the rock packs, the amount of amethyst is rediculos. I was provided some, but the pieces were so small that they would be destroyed if tumbled. There are also too many dalmatian jasper stones compared with how many of any other stone there is. Overall I am content with how well it works.
Review: Awesome Nat Geo Customer service!! - This was a great gift for our daughter. She loved it and and has gotten a lot of use from it. Recently it stopped working ( quit suddenly during cycles and all day lights flashing simultaneously) and I did some research to see if it was something I could fix. Found out there were some others that had the same issue. Some said it was the belt needing replaced or it was overloaded. We addressed these and the issue continued. Ended up reaching out to Nat Geo and explained the issue. They were amazing. The ended up replacing the unit for us and got my daughter tumbling again. Nat Geo products are a go to for us on birthdays and such for the fun and educational aspects they provide, along with the great family time and memories they have created. The customer service received will keep us buying their products! Thanks Nat Geo!

## Features

- CREATE YOUR OWN GEMSTONES - Make any stone sparkle and polish everyday rocks into dazzling gemstones! This rock tumbler kit makes it fun and easy to turn rough rocks into beautifully polished gemstones, thanks to its simple operation and durable design.
- BUILT TO LAST - Our high-quality tumblers are made with a durable motor that’s designed to last for years. The leakproof rubber barrel reduces sound, making it 75% quieter than other plastic models. Makes an excellent STEM gift or activity for girls and boys!
- EVERYTHING INCLUDED - Tumbler, 4 polishing grits, sifter, Learning Guide, rough gemstones, PLUS 2 one-pound refill packs of rough gems and jasper stones.
- EASY TO USE - Simple instructions and one-touch settings make rock tumbling fun and easy. Control the number of days for each tumbling cycle with the one-touch timer and automatic shutoff feature, so you can set it and forget it. This is a great gift for kids!
- desertcart EXCLUSIVE - Blue Marble has developed this product exclusively for desertcart.
- AWARD-WINNING PRODUCTS - Blue Marble, winner of the Toy Association's prestigious Toy of the Year Award, proudly develops products that foster education, imagination, and creativity, with a U.S. support team to ensure a stellar experience!

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07G9MWHGJ |
| Age Range Description | 8 years and up |
| Battery Description | Alkaline |
| Best Sellers Rank | #2,231 in Toys & Games ( See Top 100 in Toys & Games ) #1 in Kids' Rock Tumblers |
| Brand Name | Blue Marble |
| Customer Reviews | 4.4 out of 5 stars 2,325 Reviews |
| Educational Objective | STEM |
| Global Trade Identification Number | 00816448025891 |
| Included Components | Rock Tumbler, 2 Packs Gemstones |
| Item Dimensions | 17.52 x 6.5 x 8.66 inches |
| Item Type Name | Hobby Rock Tumbling Kit - Rock Polisher for Kids & Adults, |
| Item Weight | 8 pounds |
| Manufacturer | JMW Sales, Inc. |
| Manufacturer Part Number | NGHOBBYBUN |
| Manufacturer recommended age | 8 years and up |
| Material Type | Plastic,Rubber |
| Model Number | NGHOBBYBUN |
| Number of Items | 1 |
| Number of Packs | 4 |
| Set Name | Hobby Rock Tumbler Kit |
| Size | One Size |
| Sub Brand | National Geographic |
| Theme | Earth Science |
| UPC | 816448025891 |
| Unit Count | 1 Count |

## Images

![National Geographic Hobby Rock Tumbler Bundle for Kids and Adults - Image 1](https://m.media-amazon.com/images/I/81eRSHVQ+aL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great for beginners
*by H***H on June 15, 2021*

I have never done rock tumbling before but became interested when I found some quartz at my mother's house. She lives outside Marble Falls, Texas. I shopped around quite a bit and based off reviews alone, this was the best machine for beginners and for the price. I initially bought the one available at my local Hobby Lobby and it would leak a little water and get the belt wet. The belt system used runner teeth and after just one day of use the belt was no good and the machine would not run. With this brand the belt is smooth and operates based off tension just like the pullies in your car. The rubber barrel helps eliminate most noises. The motor is quiet, the only noise is from the machine is it vibrating on a solid surface. Mine walks a little, so make sure you have it on a level surface. I waited to do my review until I had used the machine a while. I have done two separate rounds with it. Everything runs great still after more than 2 months of continuous use. I can see that the belt will wear out before anything else. There are little flecks of the belt around the area the machine sits in. I believe there is some plastic on the pullies that may be wearing on it. It does come with an extra belt though. I am currently tumbling Tiger's Eye rocks. The pack comes with a variety of rock types. I am tumbling like rocks together just to make sure everything wears at the same rate. My only real complaint is that in all the rock packs, the amount of amethyst is rediculos. I was provided some, but the pieces were so small that they would be destroyed if tumbled. There are also too many dalmatian jasper stones compared with how many of any other stone there is. Overall I am content with how well it works.

### ⭐⭐⭐⭐⭐ Awesome Nat Geo Customer service!!
*by J***S on August 23, 2023*

This was a great gift for our daughter. She loved it and and has gotten a lot of use from it. Recently it stopped working ( quit suddenly during cycles and all day lights flashing simultaneously) and I did some research to see if it was something I could fix. Found out there were some others that had the same issue. Some said it was the belt needing replaced or it was overloaded. We addressed these and the issue continued. Ended up reaching out to Nat Geo and explained the issue. They were amazing. The ended up replacing the unit for us and got my daughter tumbling again. Nat Geo products are a go to for us on birthdays and such for the fun and educational aspects they provide, along with the great family time and memories they have created. The customer service received will keep us buying their products! Thanks Nat Geo!

### ⭐⭐⭐⭐⭐ Fun for kids
*by A***R on May 14, 2026*

This is really an incredible kit. The process takes time, but the end product is worth it. My kids loved watching the rocks change over time. The tumbler can be loud - we live in a small space so we heard it running. We polised the final rocks with some mineral oil to get a real shine.

## Frequently Bought Together

- National Geographic Hobby Rock Tumbler Kit - Rock Polisher for Kids & Adults, Noise-Reduced Barrel, Grit, 2.5 Pounds Raw Gemstone & Jasper Mix, Great STEM Hobby Kit
- NATIONAL GEOGRAPHIC Break Open 10 Premium Geodes – Includes Goggles and 2 Display Stands - Great STEM Science Kit, Geology Gift for Kids, Break Your Own Geodes with Crystals, Toys for Boys and Girls
- My Book of Rocks and Minerals: Things to Find, Collect, and Treasure

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.tn/products/74202849-national-geographic-hobby-rock-tumbler-bundle-for-kids-and-adults](https://www.desertcart.tn/products/74202849-national-geographic-hobby-rock-tumbler-bundle-for-kids-and-adults)

---

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