---
product_id: 163455007
title: "National Geographic Rock Tumbler Refill Kit - 5 lb. Mix of Rocks for Tumbling and Rough Gemstones - Rock Tumbler Supplies Include Rock Tumbler Grit and Polish Refill, and Unpolished Rocks"
brand: "blue marble"
price: "R2559"
currency: ZAR
in_stock: true
reviews_count: 13
category: "Blue Marble"
url: https://www.desertcart.co.za/products/163455007-national-geographic-rock-tumbler-refill-kit-5-lb-mix-rocks
store_origin: ZA
region: South Africa
---

# 5 jewelry settings for custom keepsakes 5 lbs premium mixed unpolished rocks 20 grit packets for 5 full tumbling cycles National Geographic Rock Tumbler Refill Kit - 5 lb. Mix of Rocks for Tumbling and Rough Gemstones - Rock Tumbler Supplies Include Rock Tumbler Grit and Polish Refill, and Unpolished Rocks

**Brand:** blue marble
**Price:** R2559
**Availability:** ✅ In Stock

## Summary

> 💎 Polish Your Passion, Rock Your Style!

## Quick Answers

- **What is this?** National Geographic Rock Tumbler Refill Kit - 5 lb. Mix of Rocks for Tumbling and Rough Gemstones - Rock Tumbler Supplies Include Rock Tumbler Grit and Polish Refill, and Unpolished Rocks by blue marble
- **How much does it cost?** R2559 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/163455007-national-geographic-rock-tumbler-refill-kit-5-lb-mix-rocks)

## 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

- • **Endless Rock Variety:** Dive into 5 pounds of diverse, unpolished gemstones including agate, jasper, and Madagascar mixes for a truly unique tumbling experience.
- • **Expert-Guided Learning:** Step-by-step polishing instructions paired with fascinating stone facts make this kit perfect for curious minds and professionals alike.
- • **Create Your Own Jewelry:** Transform your polished stones into stunning accessories with 5 included jewelry settings and a stylish storage pouch.
- • **Complete Tumbling Supply:** Includes 20 grit and polish packets—enough for five full polishing cycles to achieve museum-quality shine every time.
- • **Trusted Quality & Support:** Backed by National Geographic’s reputation and exceptional customer service, ensuring your rock tumbling journey is flawless.

## Overview

The National Geographic Rock Tumbler Refill Kit offers 5 pounds of assorted unpolished rocks and gemstones, 20 grit packets for five tumbling cycles, and 5 jewelry settings. Designed for ages 8+, it combines hands-on science with creative craftsmanship, backed by clear instructions and National Geographic’s trusted quality.

## Description

desertcart.com: National Geographic Rock Tumbler Refill Kit - 5 lb. Mix of Rocks for Tumbling and Rough Gemstones - Rock Tumbler Supplies Include Rock Tumbler Grit and Polish Refill, and Unpolished Rocks : Toys & Games

Review: Not my first purchase and not my last, love their products!!! - I recently purchased the NATIONAL GEOGRAPHIC Rock Tumbler Refill Kit from desertcart, and I must say that I am thoroughly impressed with the quality and variety it offers. The kit includes 5 pounds of unpolished rocks and gemstones, which provides an enormous variety for tumbling. The rocks are of excellent quality and come in different shapes, sizes, and colors, making the tumbling process exciting and educational. The rock tumbler grit and polish refill that comes with the kit is exceptional. It effectively smooths and polishes the rocks, giving them a beautiful shine. The included instructions are clear and easy to follow, making the tumbling process a breeze, even for beginners. What I appreciate most about this kit is the value for money. The amount of rocks and gemstones provided is generous, ensuring that I have a continuous supply for multiple tumbling sessions. The quality of the rocks and the effectiveness of the grit and polish make this kit worth every penny. Overall, the NATIONAL GEOGRAPHIC Rock Tumbler Refill Kit has exceeded my expectations. It offers a wide range of rocks and gemstones, excellent grit and polish, and is a great investment for anyone interested in the art of rock tumbling. I highly recommend this kit to both beginners and experienced tumblers alike.
Review: Must have - Great product

## Features

- ENORMOUS VARIETY - This rock tumbler refill kit has 5 pounds of unpolished rocks and gemstones consisting of 2 pounds of gemstone mix, 1 pound of agate mix, 1 pound of Madagascar mix, and 1 pound of jasper mix.
- ROCK POLISHING GRIT – There are 20 total rock tumbler grit packets in the kit, enough for five complete tumbling cycles with any rock tumbler!
- JEWELRY SETTINGS – Once your rocks are polished, use the 5 included jewelry settings to create beautiful keepsakes or use the included storage pouch to keep your favorite specimens all in one place!
- DETAILED LEARNING GUIDE – The learning guide includes polishing instructions along with fascinating information about the stones in the kit.
- HIGH-QUALITY EDUCATIONAL TOYS - We're proud to make the highest quality hands-on science toys, and all our products are backed by exceptional service. If your experience is less than stellar, let us know and we'll make things right!

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07XM95HZY |
| Best Sellers Rank | #40,481 in Toys & Games ( See Top 100 in Toys & Games ) #14 in Kids' Rock Tumblers #405 in Educational Science Kits |
| Customer Reviews | 4.6 4.6 out of 5 stars (1,956) |
| Is Discontinued By Manufacturer | No |
| Item Weight | 6.51 pounds |
| Item model number | NGWORLDREFILL |
| Language | English |
| Manufacturer | JMW Sales, Inc. |
| Manufacturer recommended age | 8 years and up |
| Product Dimensions | 6.9 x 6.1 x 5.9 inches |
| Release date | September 16, 2019 |

## Images

![National Geographic Rock Tumbler Refill Kit - 5 lb. Mix of Rocks for Tumbling and Rough Gemstones - Rock Tumbler Supplies Include Rock Tumbler Grit and Polish Refill, and Unpolished Rocks - Image 1](https://m.media-amazon.com/images/I/91sA8CejWrL.jpg)

## Questions & Answers

**Q: hi we have lost the cord for this, is there one we can purchase?**
A: They are great to deal with I would call them

**Q: With my rock tumbler kit i received 15% off my next purchase of refill pack.  The savings will not apply to the 5# refill, why?**
A: I have tried using this coupon with several different refill packs only for Amazon to not accept it. There seems to be a disconnect between NatGeo and Amazon regarding their promotional coupon codes.

**Q: How to identify tumbled rocks?  i ruined the manual,  its been years since college geology.  any hints?  seriously,  all i can identify is tigers eye.**
A: You can use the internet and now you can get a app from the app store for all rock's identification good luck   : )

**Q: Are the stones ethically sourced?**
A: As a science company we take great care in assuring that all our products are sourced ethically and appropriately.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Not my first purchase and not my last, love their products!!!
*by D***R on January 13, 2024*

I recently purchased the NATIONAL GEOGRAPHIC Rock Tumbler Refill Kit from Amazon, and I must say that I am thoroughly impressed with the quality and variety it offers. The kit includes 5 pounds of unpolished rocks and gemstones, which provides an enormous variety for tumbling. The rocks are of excellent quality and come in different shapes, sizes, and colors, making the tumbling process exciting and educational. The rock tumbler grit and polish refill that comes with the kit is exceptional. It effectively smooths and polishes the rocks, giving them a beautiful shine. The included instructions are clear and easy to follow, making the tumbling process a breeze, even for beginners. What I appreciate most about this kit is the value for money. The amount of rocks and gemstones provided is generous, ensuring that I have a continuous supply for multiple tumbling sessions. The quality of the rocks and the effectiveness of the grit and polish make this kit worth every penny. Overall, the NATIONAL GEOGRAPHIC Rock Tumbler Refill Kit has exceeded my expectations. It offers a wide range of rocks and gemstones, excellent grit and polish, and is a great investment for anyone interested in the art of rock tumbling. I highly recommend this kit to both beginners and experienced tumblers alike.

### ⭐⭐⭐⭐⭐ Must have
*by X***S on December 2, 2025*

Great product

### ⭐⭐⭐⭐⭐ great
*by E***8 on December 20, 2025*

just what we needed for the Christmas holiday

## Frequently Bought Together

- National Geographic Rock Tumbler Refill Kit - 5 lb. Mix of Rocks for Tumbling and Rough Gemstones - Rock Tumbler Supplies Include Rock Tumbler Grit and Polish Refill, and Unpolished Rocks
- 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 Kit – Hobby Edition Includes Rough Gemstones, and 4 Polishing Grits, Great STEM Science Kit for Geology Enthusiasts, Rock Polisher for Kids and Adults

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*Product available on Desertcart South Africa*
*Store origin: ZA*
*Last updated: 2026-03-06*