---
product_id: 303579962
title: "National Geographic Rock Tumbler Mega Refill Kit - 3lbs"
brand: "blue marble"
price: "52783 Ft"
currency: HUF
in_stock: true
reviews_count: 5
category: "Blue Marble"
url: https://www.desertcart.hu/products/303579962-national-geographic-rock-tumbler-mega-refill-kit-3lbs
store_origin: HU
region: Hungary
---

# 3 lbs of 9 unique gemstones 6 jewelry fastenings included 4-step polishing grit system National Geographic Rock Tumbler Mega Refill Kit - 3lbs

**Brand:** blue marble
**Price:** 52783 Ft
**Availability:** ✅ In Stock

## Summary

> 💎 Polish your passion, craft your story.

## Quick Answers

- **What is this?** National Geographic Rock Tumbler Mega Refill Kit - 3lbs by blue marble
- **How much does it cost?** 52783 Ft with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hu](https://www.desertcart.hu/products/303579962-national-geographic-rock-tumbler-mega-refill-kit-3lbs)

## 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

- • **Diverse Gemstone Collection:** Nine varieties including Tiger’s Eye and Amethyst for endless creative possibilities.
- • **STEM Learning Meets Hands-On Fun:** Comes with a full-color guide packed with fascinating gemstone facts to fuel curiosity.
- • **Create Custom Jewelry Masterpieces:** Includes necklace, earrings, keychain, and ring fastenings to showcase your polished stones.
- • **Transform Rough Rocks into Dazzling Gems:** Four grades of grit polish stones to perfection, unlocking their natural brilliance.
- • **Trusted Quality & Satisfaction Guaranteed:** From National Geographic’s STEM series, designed to inspire and educate with confidence.

## Overview

The National Geographic Rock Tumbler Mega Refill Kit offers 3 pounds of nine distinct raw gemstones and a four-stage polishing grit system to transform rough stones into sparkling gems. Complete with six jewelry fastenings and an educational guide, this kit blends creative craftsmanship with STEM learning, perfect for aspiring jewelers and curious minds alike.

## Description

Stock Up with National Geographic’s Mega Gemstone Refill KitThis Gemstone Refill Kit Includes:- 9 types of raw gemstones (3 lbs in total)- 4 courses of polishing grit- 6 jewelry fastenings- 1 full-color learning guideNational Geographic Toys is proud to provide a 100% satisfaction guarantee with all our products so that you can buy with confidence. About the National Geographic Society: With a mission to inspire people to care about the planet, the 131-year-old National Geographic Society is one of the world's largest nonprofit scientific and educational organizations. National Geographic's net proceeds support vital exploration, conservation, research, and education programs.

Review: Det var bra med sten
Review: I like rocks and crystals, so after contemplating awhile I decided to get into tumbling. This was my first online rock order in bulk to try out fancy stones in the tumbler. I found the cupful of chips (what takes weight too) too much compared to the rest of the amount of rocks on the first sight.

## Features

- GEMSTONES OF NINE VARIETIES: Tiger’s Eye, Amethyst, Aventurine, Rose Quartz, Red Jasper, Agate, Sodalite, Dalmatian Jasper, Hematite. (3lb in total)
- FOUR GRADES OF GRIT: Coarse, Medium, Fine, Polish. Transform your stones from rough rocks to dazzling gemstones!
- JEWELRY FASTENINGS: 1 Necklace, 1 set of Earrings, 1 Keychain, 1 Ring. Create custom jewelry from your newly polished gemstones!
- LEARNING GUIDE: Our learning guide will teach you all about these unique gemstone specimens and includes many amazing and fascinating facts
- SATISFACTION GUARANTEED – The National Geographic STEM series provides kids high-quality educational toys 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

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07H7WFWYT |
| Assembly Required | No |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #77,918 in Toys ( See Top 100 in Toys ) #1,200 in Educational Science Kits |
| Color | Multicolor |
| Customer Reviews | 4.6 4.6 out of 5 stars (2,293) |
| Date First Available | 29 September 2018 |
| Educational Objective(s) | STEM |
| Item model number | NGGEMREFILLMEGA |
| Language | English |
| Manufacturer recommended age | 8 years and up |
| Material Type(s) | Stone |
| Number of Puzzle Pieces | 9 |
| Product Dimensions | 13.65 x 13.5 x 13.81 cm; 1.36 kg |
| Remote Control Included? | No |
| Scale | 1/32 |
| tech_spec_battery_description_toys | No batteries required |

## Product Details

- **Brand:** Blue Marble
- **Age range (description):** Kid
- **Colour:** Multicolor
- **Theme:** Nature
- **Item dimensions L x W x H:** 13.6 x 13.5 x 13.8 centimeters

## Images

![National Geographic Rock Tumbler Mega Refill Kit - 3lbs - Image 1](https://m.media-amazon.com/images/I/A1+omj2TEGL.jpg)

## Questions & Answers

**Q: Hello. The machine that turns the tumbler has suddenly stopped working - this happened after one day putting the 3rd grit and setting the tumbler to**
A: Hello, I can't view your entire question. Could you please rewrite it?

**Q: Is it battery operated?**
A: No, it plugs into an electrical outlet.

**Q: What power and plug type is this? 240v? 50hz?**
A: Hello.
The product is American made.  The plug is a type of receipt used by the US state.  You can use the plug converter to use. Our customers who buy the product use it this way. Thank you

**Q: The machine has suddenly stopped turning after placing the tumbler with the 3rd grit. The numbers 1-7 on the machine just keep flashing. Why?**
A: hello sir,please contact the store where you received the product. I don't understand the problem

## Customer Reviews

### ⭐⭐⭐ Review
*by Z***M on 9 October 2023*

Det var bra med sten

### ⭐⭐⭐⭐ Review
*by M***A on 5 January 2022*

I like rocks and crystals, so after contemplating awhile I decided to get into tumbling. This was my first online rock order in bulk to try out fancy stones in the tumbler. I found the cupful of chips (what takes weight too) too much compared to the rest of the amount of rocks on the first sight.

### ⭐⭐⭐⭐⭐ Review
*by L***E on 24 October 2020*

Nice range of different rocks, great for beginners.

## Frequently Bought Together

- National Geographic Rock Tumbler Refill Kit – 3 lbs. of Rough Gemstones and Rocks for Tumbling Including Amethyst and Quartz – Rock Tumbler Supplies Include Rock Tumbler Grit and Jewelry Accessories
- 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
- 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

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*Product available on Desertcart Hungary*
*Store origin: HU*
*Last updated: 2026-03-02*