---
product_id: 220905045
title: "NATIONAL GEOGRAPHIC Professional Rock Tumbler Kit - Complete Rock Tumbler for Adults & Kids with Durable 2 Lb. Barrel, Rocks, Grit, and Patented GemFoam Finishing Foam Polish, Rock Polisher"
brand: "blue marble"
price: "KSh39756"
currency: KES
in_stock: true
reviews_count: 7
url: https://www.desertcart.co.ke/products/220905045-national-geographic-professional-rock-tumbler-kit-complete-rock-tumbler-adults
store_origin: KE
region: Kenya
---

# Includes patented GemFoam for ultimate shine 75% quieter stainless-steel barrel Durable motor with time & speed control NATIONAL GEOGRAPHIC Professional Rock Tumbler Kit - Complete Rock Tumbler for Adults & Kids with Durable 2 Lb. Barrel, Rocks, Grit, and Patented GemFoam Finishing Foam Polish, Rock Polisher

**Brand:** blue marble
**Price:** KSh39756
**Availability:** ✅ In Stock

## Summary

> 💎 Turn Rough Rocks into Radiant Gems—Your Personal Gem Lab Awaits!

## Quick Answers

- **What is this?** NATIONAL GEOGRAPHIC Professional Rock Tumbler Kit - Complete Rock Tumbler for Adults & Kids with Durable 2 Lb. Barrel, Rocks, Grit, and Patented GemFoam Finishing Foam Polish, Rock Polisher by blue marble
- **How much does it cost?** KSh39756 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.ke](https://www.desertcart.co.ke/products/220905045-national-geographic-professional-rock-tumbler-kit-complete-rock-tumbler-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

- • **Whisper-Quiet Power:** Engineered with a leak-proof stainless-steel barrel that’s 75% quieter than plastic alternatives—peaceful creativity guaranteed.
- • **Set & Forget Precision:** Customizable time and speed controls let you perfect your polish without hovering.
- • **All-Inclusive Gem Creation:** Comes with 1 lb. of raw rocks, 9 gemstone varieties, grit, strainer, and 5 jewelry fastenings—everything to start your gem journey.
- • **Revolutionary GemFoam Polish:** Patented reusable foam polish delivers a dazzling, professional-grade shine that stands out in any collection.
- • **Award-Winning Quality & Support:** From the Toy Association’s Toy of the Year winner, backed by U.S.-based customer care for a seamless experience.

## Overview

The NATIONAL GEOGRAPHIC Professional Rock Tumbler Kit is a large-capacity, durable rock polisher designed for both adults and kids. Featuring a quiet, leak-proof stainless-steel barrel with customizable time and speed controls, it includes 1 lb. of raw rocks, 9 gemstone types, grit, strainer, jewelry fastenings, and the patented GemFoam finishing polish for a brilliant shine. This award-winning kit combines educational fun with professional results, supported by dedicated U.S. customer service.

## Description

Full description not available

## Features

- CREATE YOUR OWN GEMSTONES - Rock tumbling is a hugely popular hobby for kids and adults! This professional rock tumbler makes it fun and easy to turn rough rocks into beautifully polished gemstones, thanks to its simple operation and durable design.
- A TUMBLER THAT'S MADE TO LAST - The durable motor has time and speed control settings so you can set it and forget it. An improved leak-proof, 2 lb. barrel features a stainless-steel lid and is 75% quieter overall than plastic tumbler barrels.
- INCLUDES 1 LB. OF ROCKS & MORE - This tumbling kit comes with everything you need: 1 lb. of raw rocks with 9 types of gemstones, 5 jewelry fastenings, grit, strainer & GemFoam for a dazzling shine!
- USE GEMFOAM FOR DAZZLING RESULTS - This rock tumbler kit stands apart from others thanks to our new, reusable GemFoam rock polisher! Add GemFoam and water to the barrel after your final tumbling stage and your gems will have incredible shine!
- 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 |
|---------------|-------|
| Theme | Geology |
| Item Dimensions | 12.6 x 6.69 x 10.24 inches |
| Size Name | Large Capacity |

## Images

![NATIONAL GEOGRAPHIC Professional Rock Tumbler Kit - Complete Rock Tumbler for Adults & Kids with Durable 2 Lb. Barrel, Rocks, Grit, and Patented GemFoam Finishing Foam Polish, Rock Polisher - Image 1](https://m.media-amazon.com/images/I/91NIcMq15dL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Quiet, Easy to Use and Fun Little Rock Tumbler Kit!
*by L***E on November 9, 2023*

The media could not be loaded. I just got this rock tumbler kit today, and so far I am very pleased with it!It is quiet, and doesn't take up too much space, and it comes with rocks to tumble, a jewelry-making kit, an extra pully band, foam and grit, and a nice booklet on the rocks included with the tumbler.A very nice little kit from Nat Geo, for a good price!It definitely does not come with enough grit though.I purchased additional 120 grit aluminum oxide to use with for my future rock tumbling.I might get a different grade of grit later, but to start out 120 aluminum oxide seemed most likely to give my rocks the best shine, without grinding them into dust.I can also say that the wheel looks a bit wiggly, but it doesn't seem to hinder the machine at all.I am trying an experiment right now where I soak my rocks for 24 hours prior to tumbling them, and then I am going to add just a bit of mineral oil to the water, grit and foam.I am testing my rocks in; vinegar, mineral oil and water/ mineral oil and water/ water.I will update this review of the results, after I have results to post.UPDATE: DO NOT USE DARK COLORED/BLACK GRIT/SAND/POWDER WITH LIGHT COLORED STONES!It grinds into the stones, and changes their color, based on the grit/powered/sand you're using!After 3 days of tumbling to each batch of stones, these are my results:- The vinegar, mineral oil and water mix:Shined and cleaned the rocks, and seemed to soften them, creating a visible effect in their polish.- The mineral oil and water:Also shined the stones, and seemed to soften them, without much difference in their cleanliness, and added a visible effect in their polish.- Water:Did not soften or clean the stones, and had less of an effect on their polish.OVERALL RESULTS OF EXPERIMENT:I think pre-soaking the stones in mineral oil and vinegar had the most noticeable effect on the stones polish.They seem to soften in the mineral oil, and the vinegar does get them clean pre-polish.I also tried tumbling the stones in mineral oil and water, with the aluminum oxide powder, and found that the dark colored powder ground into the stones, specifically the Tigers Eye....Which is NOT the result I wanted.Upon further experimentation and research, I have decided to use clean/white sand and colored sand as grit, to see if those work better as a polishing medium than the aluminum oxide.If my theory is correct, pre-soaking the stones in mineral oil and vinegar and then tumbling with the color sands should grind the sand color of my choice into the rocks.Will update later with pictures, if/when possible.So far, it's a going well and I'm having fun experimenting with geology!Yay, shiny rocks! Thanks Nat Geo!

### ⭐⭐⭐⭐⭐ Great rock tumbler
*by J***T on March 11, 2025*

My 7 year old loves this, it was easy to do and worked perfectly. It only comes with 1 pack of tumbling supplies and it's loud. We set it up in the garage so the noise wasn't ever an issue and we plan to buy more tumbling gravel

### ⭐⭐⭐⭐⭐ It works great.
*by D***. on August 2, 2025*

Works great and the result is nice iiií

## Frequently Bought Together

- NATIONAL GEOGRAPHIC Professional Rock Tumbler Kit - Complete Rock Tumbler for Adults & Kids with Durable 2 Lb. Barrel, Rocks, Grit, and Patented GemFoam Finishing Foam Polish, Rock Polisher
- Blue Marble National Geographic Rock Tumbler Grit and Polish Refill Kit - Tumbling Grit Media, Polish Up to 20 lbs. of Rocks, Works with Any Rock Polisher, Rock Tumbler Supplies
- NATIONAL GEOGRAPHIC Rock Tumbler Refill Kit – 1Lb. Gemstones and Rocks for Tumbling including Unpolished Amethyst and Quartz – Rock Tumbler Supplies include Rock Tumbler Grit and Jewelry Accessories

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*Product available on Desertcart Kenya*
*Store origin: KE*
*Last updated: 2026-03-03*