---
product_id: 265847435
title: "Blue Marble 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: "€ 152.06"
currency: EUR
in_stock: true
url: https://www.desertcart.gr/products/265847435-blue-marble-national-geographic-rock-tumbler-refill-kit-5-lb
store_origin: GR
region: Greece
---

# 5 lb. rock mix detailed guide 20 grit packets Blue Marble 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:** € 152.06
**Availability:** ✅ In Stock

## Summary

> 🌟 Rock Your World with Every Tumble!

## Quick Answers

- **What is this?** Blue Marble 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?** € 152.06 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.gr](https://www.desertcart.gr/products/265847435-blue-marble-national-geographic-rock-tumbler-refill-kit-5-lb)

## 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

- • **Polish Like a Pro!:** Includes 20 grit packets for five complete tumbling cycles—your rocks will shine like never before!
- • **Quality You Can Trust!:** Backed by exceptional service, ensuring your rock tumbling experience is nothing short of stellar.
- • **Craft Your Own Jewelry!:** Transform polished stones into stunning keepsakes with 5 included jewelry settings.
- • **Learn While You Create!:** Comes with a detailed learning guide packed with polishing tips and fascinating stone facts.
- • **Unleash Your Inner Geologist!:** Dive into a 5 lb. treasure trove of unpolished rocks and gemstones, perfect for all ages.

## Overview

The Blue Marble NATIONAL GEOGRAPHIC Rock Tumbler Refill Kit offers a comprehensive 5 lb. mix of unpolished rocks and gemstones, complete with 20 grit packets for multiple polishing cycles. Ideal for ages 8 and up, this kit includes jewelry settings and a detailed learning guide, making it a perfect educational tool for budding geologists and creative minds alike.

## Description

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

## Features

- ENORMOUS VARIETY - This rock tumbler refill kit has 5 pounds of unpolished rocks and gemstones consisting of a 1-pound gemstone mix, 1-pound agate mix, 1-pound Madagascar mix, 1-pound jasper mix, and 1-pound petrified wood 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 |
|---------------|-------|
| Product Dimensions | 17.53 x 15.49 x 14.99 cm; 2.95 kg |
| Manufacturer recommended age | 8 years and up |
| Item model number | NGWORLDREFILL |
| Educational Objective(s) | Learning Education STEM Toys |
| Language: | English |
| Number of Game Players | 1 |
| Assembly Required | No |
| Batteries Required? | No |
| Batteries Included? | No |
| tech_spec_battery_description_toys | No batteries required |
| Material Type(s) | Rocks, Gemstones, Agate,Jasper, Petrified Wood |
| Remote Control Included? | No |
| Color | Multicolor |
| Language | English |
| ASIN | B07XM95HZY |

## Images

![Blue Marble 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.

## 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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**Shop now:** [https://www.desertcart.gr/products/265847435-blue-marble-national-geographic-rock-tumbler-refill-kit-5-lb](https://www.desertcart.gr/products/265847435-blue-marble-national-geographic-rock-tumbler-refill-kit-5-lb)

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*Product available on Desertcart Greece*
*Store origin: GR*
*Last updated: 2026-01-31*