---
product_id: 219416282
title: "National Geographic Rock Tumbler Refill Kit – Rock Tumbling Supplies Including Rock Tumbler Grit and Polish Refill, Ceramic Media, GemFoam, 3 lbs Madagascar Rocks for Tumbling, Jewelry Accessories"
brand: "blue marble"
price: "A$157"
currency: AUD
in_stock: true
url: https://www.desertcart.com.au/products/219416282-national-geographic-rock-tumbler-refill-kit-rock-tumbling-supplies-including
store_origin: AU
region: Australia
---

# 3 lbs Madagascar rocks Ceramic media for noise reduction High-quality silicon carbide grit National Geographic Rock Tumbler Refill Kit – Rock Tumbling Supplies Including Rock Tumbler Grit and Polish Refill, Ceramic Media, GemFoam, 3 lbs Madagascar Rocks for Tumbling, Jewelry Accessories

**Brand:** blue marble
**Price:** A$157
**Availability:** ✅ In Stock

## Summary

> ✨ Unleash Your Inner Geologist with Every Tumble!

## Quick Answers

- **What is this?** National Geographic Rock Tumbler Refill Kit – Rock Tumbling Supplies Including Rock Tumbler Grit and Polish Refill, Ceramic Media, GemFoam, 3 lbs Madagascar Rocks for Tumbling, Jewelry Accessories by blue marble
- **How much does it cost?** A$157 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.au](https://www.desertcart.com.au/products/219416282-national-geographic-rock-tumbler-refill-kit-rock-tumbling-supplies-including)

## 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

- • **Shine On:** Experience the revolutionary GemFoam for an unparalleled shine on your tumbled treasures!
- • **Madagascar Magic:** Dive into a treasure trove of 3 lbs of exotic rocks, including rose quartz and jasper!
- • **Polish Like a Pro:** Transform ordinary rocks into dazzling gems with our premium polishing grit!
- • **Quietly Effective:** Our ceramic media enhances tumbling efficiency while keeping noise to a minimum.
- • **Guaranteed Satisfaction:** Join the National Geographic family with a promise of quality and fun!

## Overview

The NATIONAL GEOGRAPHIC Rock Tumbler Refill Kit includes 3 lbs of Madagascar rocks, high-quality silicon carbide grit, ceramic media for improved tumbling, and GemFoam for exceptional shine. This kit is designed to enhance your rock tumbling experience, ensuring quality results and satisfaction.

## Description

National Geographic Rock Tumbler Refill Kit – Rock Tumbling Supplies Including Rock Tumbler Grit and Polish Refill, Ceramic Media, GemFoam, 3 lbs Madagascar Rocks for Tumbling, Jewelry Accessories

## Features

- POLISH INCREDIBLE ROCKS FROM MADAGASCAR - You'll have plenty of tumbling to do with 3 pounds of rocks from Madagascar. This rock refill pack can include rose quartz, jasper, and more. It's an awesome assortment of rocks you will treasure forever
- QUALITY GRIT RESULTS IN A DAZZLING POLISH - The rock polishing grit in this pack is high-quality silicon carbide and will polish 8-10 lbs of rocks, includes measuring scoop and storage containers with secure screw-top closures for easy storage
- IMPROVE YOUR ROCK TUMBLING RESULTS - Ceramic tumbler media makes the entire rock tumbling process more effective, improving delivery of rock tumbling grit, quieting tumbler noise, reducing rock breakage, and acting as a filler for smaller batches
- A BRAND NEW WAY TO MAKE TUMBLED ROCKS SHINE - GemFoam is a unique new rock polisher media that gives unprecedented shine to tumbled rocks. Just add the patent-pending rock polishing media to your tumbler after the final grit cycle for great results
- SATISFACTION GUARANTEED - The National Geographic STEM series provides high-quality products that are a whole lot of fun If your experience is anything less than extraordinary, let us know so we can make it right for you.

## Product Details

- **Brand:** Blue Marble
- **Style:** Complete Starter Kit
- **Theme:** media
- **Recommended Uses For Product:** Travel, Home
- **Included Components:** (function(f) {var _np=(window.P._namespace("DetailPageProductOverviewTemplatesJava"));if(_np.guardFatal){_np.guardFatal(f)(_np);}else{f(_np);}}(function(P) {
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}));  Jewelry Fastenings, 10 mL Grit Scoop, 1.5 pounds of Ceramic Media, 4 Stages of Silicon Carbide Polishing Grit Compound, 3 Pound Madagascar Rock Refill Mix, 30 g GemFoam, Detailed Learning Guide with InstructionsJewelry Fastenings, 10 mL Grit Scoop,…    See more

## Images

![National Geographic Rock Tumbler Refill Kit – Rock Tumbling Supplies Including Rock Tumbler Grit and Polish Refill, Ceramic Media, GemFoam, 3 lbs Madagascar Rocks for Tumbling, Jewelry Accessories - Image 1](https://m.media-amazon.com/images/I/915XqBWET+L.jpg)
![National Geographic Rock Tumbler Refill Kit – Rock Tumbling Supplies Including Rock Tumbler Grit and Polish Refill, Ceramic Media, GemFoam, 3 lbs Madagascar Rocks for Tumbling, Jewelry Accessories - Image 2](https://m.media-amazon.com/images/I/91UhliEDQfL.jpg)
![National Geographic Rock Tumbler Refill Kit – Rock Tumbling Supplies Including Rock Tumbler Grit and Polish Refill, Ceramic Media, GemFoam, 3 lbs Madagascar Rocks for Tumbling, Jewelry Accessories - Image 3](https://m.media-amazon.com/images/I/91HDb+LfUML.jpg)
![National Geographic Rock Tumbler Refill Kit – Rock Tumbling Supplies Including Rock Tumbler Grit and Polish Refill, Ceramic Media, GemFoam, 3 lbs Madagascar Rocks for Tumbling, Jewelry Accessories - Image 4](https://m.media-amazon.com/images/I/91ZEGdAIx1L.jpg)
![National Geographic Rock Tumbler Refill Kit – Rock Tumbling Supplies Including Rock Tumbler Grit and Polish Refill, Ceramic Media, GemFoam, 3 lbs Madagascar Rocks for Tumbling, Jewelry Accessories - Image 5](https://m.media-amazon.com/images/I/91ONeNxCDZL.jpg)

## Available Options

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

## Questions & Answers

**Q: How many oz is in each container?**
A: 1 Coarse-16oz.  2 Medium-13oz.  3 Pre-polish-12oz.  4 Polish-11.5 oz.

**Q: I just opened this and finished with grit one,  went to put grit 2 in and bottle open and 1/2 full. How do I contact seller?**
A: I would go through Amazon to get an answer for your problem.

**Q: Can it be used together ?**
A: Each grit is a different fineness intended for a specific purpose. We do not recommend using them at the same time.  We do recommend 1 TBS grit per per 1 LB rocks, at each cycle. For further information please contact us at help@natgeotoys.com.

**Q: After each step for the rocks in the kit, my rocks dry with a dull white finish.  It doesn't show when it is wet. Am I doing something wrong?**
A: No.  I find that after tumbling with the finest grit after the last step... and thoroughly allowing the rocks to dry, a nice coat of wax or oil brings out the color beautifully.

## Frequently Bought Together

- NATIONAL GEOGRAPHIC Rock Tumbler Refill Kit – Rock Tumbling Supplies including Rock Tumbler Grit and Polish Refill, Ceramic Media, GemFoam, 3 lbs Madagascar Rocks for Tumbling, Jewelry Accessories
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**Shop now:** [https://www.desertcart.com.au/products/219416282-national-geographic-rock-tumbler-refill-kit-rock-tumbling-supplies-including](https://www.desertcart.com.au/products/219416282-national-geographic-rock-tumbler-refill-kit-rock-tumbling-supplies-including)

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*Product available on Desertcart Australia*
*Store origin: AU*
*Last updated: 2026-01-27*