---
product_id: 76263492
title: "Blue Marble National Geographic Hobby Rock Tumbler Kit- Multi Color, Kids"
brand: "blue marble"
price: "₨155625"
currency: LKR
in_stock: true
reviews_count: 9
category: "Blue Marble"
url: https://www.desertcart.lk/products/76263492-blue-marble-national-geographic-hobby-rock-tumbler-kit-multi-color
store_origin: LK
region: Sri Lanka
---

# 4-stage polishing grit for pro shine Includes 9 real rough gemstones One-touch automatic timer & shutoff Blue Marble National Geographic Hobby Rock Tumbler Kit- Multi Color, Kids

**Brand:** blue marble
**Price:** ₨155625
**Availability:** ✅ In Stock

## Summary

> 💎 Polish your passion, sparkle your story.

## Quick Answers

- **What is this?** Blue Marble National Geographic Hobby Rock Tumbler Kit- Multi Color, Kids by blue marble
- **How much does it cost?** ₨155625 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.lk](https://www.desertcart.lk/products/76263492-blue-marble-national-geographic-hobby-rock-tumbler-kit-multi-color)

## 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

- • **All-in-One Kit:** Everything you need—tumbler, grits, sifter, guide & real gems included.
- • **Trusted Legacy:** Backed by 129 years of National Geographic’s educational excellence.
- • **Effortless Precision:** One-touch settings with automatic shutoff for stress-free polishing.
- • **Expand Your Collection:** Perfect for budding geologists and creative jewelry makers alike.
- • **Transform Rocks into Gems:** Turn everyday stones into dazzling, museum-quality treasures.

## Overview

The Blue Marble National Geographic Hobby Rock Tumbler Kit is a complete, easy-to-use rock polishing system designed for kids 8 and up. Featuring four polishing grits, nine types of real rough gemstones, and an automatic shutoff timer, this kit transforms ordinary stones into stunning polished gems. It includes a learning guide and all necessary components, making it perfect for educational fun and creative jewelry projects, backed by National Geographic’s 129-year legacy of inspiring young explorers.

## Description

Learn all about gems and rock tumbling with National Geographic's best selling rock tumbling kit. Make any stone sparkle, investigate rock formations, and create your own custom jewelry that is sure to leave an impression. An absolute necessity for any rock collector, this kit will bring your passion to the next level. But the fun doesn't stop there! This tumbler can be used to make sea glass, polish metal scraps, and more! Join National Geographic and explore your world, and all its hidden beauty.

Review: Buy this product and enjoy your hobby but do not pay three time more on desertcart. - Excellent product and 100% results producer but now a days this product buy on desertcart is totally foolish idea because very very expensive compared to original cost in USA. Dear buyers don't buy this product.
Review: Worth it - Awesome product. Good for a start

## Features

- MAKE ANY STONE SPARKLE and polish everyday rocks into dazzling gemstones
- ENHANCE YOUR ROCK COLLECTION or start a new one! Makes all rocks shine like professionally polished stones
- EVERYTHING IS INCLUDED in the kit; tumbler, four polishing grits, sifter, learning guide PLUS nine types of real rough gemstones
- EASY TO USE with our simple instructions, one-touch settings and an automatic shutoff timer
- 100% SATISFACTION GUARANTEED - For 129 years, National Geographic has been committed to providing fun and fascinating educational opportunities for children

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B01LQCIL88 |
| Assembly Required | No |
| Batteries Included | Yes |
| Batteries Required | No |
| Best Sellers Rank | #116,745 in Toys & Games ( See Top 100 in Toys & Games ) #3,314 in Science Toys & Kits |
| Country of Origin | USA |
| Customer Reviews | 4.5 4.5 out of 5 stars (30,296) |
| Date First Available | 27 October 2016 |
| Educational Objective(s) | Geology |
| Generic Name | Hobby Rock Tumbler |
| Included Components | AC Power Adapter, Jewelry Fastenings, Learning Guide, Rock Tumbler, Rough Gemstones (1/2 lb), Strainer, Tumbling Grit (4 grades) |
| Item Dimensions LxWxH | 35.1 x 12.4 x 20.5 Centimeters |
| Item Weight | 2 kg 300 g |
| Item model number | NGHOBBYTUMBLER |
| Language | English |
| Manufacturer | JMW Sales, Inc |
| Manufacturer recommended age | 8 years and up |
| Material Type(s) | Metal,Gems |
| Model Number | NGHOBBYTUMBLER |
| Product Dimensions | 35.08 x 12.4 x 20.47 cm; 2.3 kg |
| Remote Control Included? | No |

## Product Details

- **Age Range (Description):** 96 months to up
- **Brand:** Blue Marble
- **Item dimensions L x W x H:** 35.1 x 12.4 x 20.5 Centimeters
- **Size:** Medium
- **Theme:** Geology

## Images

![Blue Marble National Geographic Hobby Rock Tumbler Kit- Multi Color, Kids - Image 1](https://m.media-amazon.com/images/I/91kPaJp1AfL.jpg)

## Questions & Answers

**Q: Is it 230volts 50 hz please let me know**
A: Yes this is working on 230 volts 50 Hz.

**Q: What is the actual cost of rock tumbler ?. Sometims it showed 5+thousand, sometimes 13+ Sometimes 18 + flirting price...**
A: Now a days to import form USA or buy at Amazon is very expensive

**Q: Can I use it for kno3 powdering**
A: Actually my requirement is different. I have no idea about kno3 powdering.

**Q: What is the life cycle of polishing grit**
A: Single use only.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Buy this product and enjoy your hobby but do not pay three time more on Amazon.
*by D***I on 28 March 2019*

Excellent product and 100% results producer but now a days this product buy on Amazon is totally foolish idea because very very expensive compared to original cost in USA. Dear buyers don't buy this product.

### ⭐⭐⭐⭐⭐ Worth it
*by G***E on 17 October 2018*

Awesome product. Good for a start

### ⭐⭐⭐ Simple Pass.
*by S***O on 2 November 2020*

1 🌟 less for some funny jewelley fastenings and another 1 🌟 less for some tiny bizarre stones.

## Frequently Bought Together

- 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
- 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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**Shop now:** [https://www.desertcart.lk/products/76263492-blue-marble-national-geographic-hobby-rock-tumbler-kit-multi-color](https://www.desertcart.lk/products/76263492-blue-marble-national-geographic-hobby-rock-tumbler-kit-multi-color)

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*Product available on Desertcart Sri Lanka*
*Store origin: LK*
*Last updated: 2026-03-02*