---
product_id: 646717446
title: "Blue Marble NATIONAL GEOGRAPHIC Hobby Rock Tumbler Kit - Rock Polisher for Kids & Adults, Noise-Reduced Barrel, Grit, 2.5 Pounds Raw Gemstone & Jasper Mix, Great STEM Hobby Kit"
brand: "blue marble"
price: "VT139969"
currency: VUV
in_stock: true
url: https://www.desertcart.vu/products/646717446-blue-marble-national-geographic-hobby-rock-tumbler-kit-rock-polisher
store_origin: VU
region: Vanuatu
---

# 2.5 lbs raw gemstones One-touch timer & auto shutoff 75% quieter motor Blue Marble NATIONAL GEOGRAPHIC Hobby Rock Tumbler Kit - Rock Polisher for Kids & Adults, Noise-Reduced Barrel, Grit, 2.5 Pounds Raw Gemstone & Jasper Mix, Great STEM Hobby Kit

**Brand:** blue marble
**Price:** VT139969
**Availability:** ✅ In Stock

## Summary

> 💎 Turn rough rocks into dazzling gems—because your creativity deserves to shine!

## Quick Answers

- **What is this?** Blue Marble NATIONAL GEOGRAPHIC Hobby Rock Tumbler Kit - Rock Polisher for Kids & Adults, Noise-Reduced Barrel, Grit, 2.5 Pounds Raw Gemstone & Jasper Mix, Great STEM Hobby Kit by blue marble
- **How much does it cost?** VT139969 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.vu](https://www.desertcart.vu/products/646717446-blue-marble-national-geographic-hobby-rock-tumbler-kit-rock-polisher)

## 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

- • **Effortless STEM Fun:** One-touch timer and automatic shutoff let you set it and forget it, making it ideal for busy professionals and curious kids alike.
- • **Whisper-Quiet Power:** Experience rock tumbling with a noise-reduced barrel that’s 75% quieter than competitors—perfect for home or classroom focus.
- • **Durable & Built to Last:** High-quality motor and leakproof rubber barrel ensure years of smooth, reliable polishing adventures.
- • **All-Inclusive Gem Creation:** Comes complete with 4 polishing grits, sifter, learning guide, and 2 bonus 1-pound gemstone refill packs to fuel your creativity.
- • **Award-Winning Educational Toy:** Backed by National Geographic and Toy of the Year honors, this kit inspires imagination, science learning, and hands-on discovery.

## Overview

The Blue Marble National Geographic Hobby Rock Tumbler Kit is a durable, noise-reduced rock polisher designed for kids and adults. It includes everything needed to transform 2.5 pounds of raw gemstones into polished treasures, featuring a quiet motor, one-touch timer with auto shutoff, and comprehensive STEM learning materials. Winner of the Toy Association's Toy of the Year Award, this kit combines education, creativity, and fun in one complete package.

## Description

NATIONAL GEOGRAPHIC Hobby Rock Tumbler Kit - Rock Polisher for Kids & Adults, Noise-Reduced Barrel, Grit, 2.5 Pounds Raw Gemstone & Jasper Mix, Great STEM Hobby Kit

## Features

- CREATE YOUR OWN GEMSTONES - Make any stone sparkle and polish everyday rocks into dazzling gemstones! This rock tumbler kit makes it fun and easy to turn rough rocks into beautifully polished gemstones, thanks to its simple operation and durable design.
- BUILT TO LAST - Our high-quality tumblers are made with a durable motor that’s designed to last for years. The leakproof rubber barrel reduces sound, making it 75% quieter than other plastic models. Makes an excellent STEM gift or activity for girls and boys!
- EVERYTHING INCLUDED - Tumbler, 4 polishing grits, sifter, Learning Guide, rough gemstones, PLUS 2 one-pound refill packs of rough gems and jasper stones.
- EASY TO USE - Simple instructions and one-touch settings make rock tumbling fun and easy. Control the number of days for each tumbling cycle with the one-touch timer and automatic shutoff feature, so you can set it and forget it. This is a great gift for kids!
- AWARD-WINNING PRODUCTS - Blue Marble, winner of the Toy Association's prestigious Toy of the Year Award, proudly develops products that foster education, imagination, and creativity, with a U.S. support team to ensure a stellar experience!

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Educational Objective(s) | STEM |
| Model Number | NGHOBBYBUN |
| Number of Game Players | 1 |
| Assembly Required | No |
| Batteries Required | No |
| Batteries Included | No |
| tech_spec_battery_description_toys | alkaline or rechargeable batteries |
| Material Type(s) | Plastic,Rubber |
| Remote Control Type | None - Not Applicable |
| Colour | Multicolor |
| Product Dimensions | 44.5 x 16.51 x 22 cm; 3.62 kg |
| Item model number | NGHOBBYBUN |
| Manufacturer recommended age | 8 years and up |
| Manufacturer | JMW Sales, Inc. |
| Item Weight | 3 kg 620 g |

## Product Details

- **Size:** Medium
- **Brand:** Blue Marble
- **Theme:** Rock Tumbling
- **Age Range (Description):** 8 years and up
- **Item dimensions L x W x H:** 44.5 x 16.5 x 22 Centimeters

## Images

![Blue Marble NATIONAL GEOGRAPHIC Hobby Rock Tumbler Kit - Rock Polisher for Kids & Adults, Noise-Reduced Barrel, Grit, 2.5 Pounds Raw Gemstone & Jasper Mix, Great STEM Hobby Kit - Image 1](https://m.media-amazon.com/images/I/81eRSHVQ+aL.jpg)

## Available Options

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

## Frequently Bought Together

- National Geographic Hobby Rock Tumbler Kit - Rock Polisher for Kids & Adults, Noise-Reduced Barrel, Grit, 2.5 Pounds Raw Gemstone & Jasper Mix, Great STEM Hobby Kit
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**Shop now:** [https://www.desertcart.vu/products/646717446-blue-marble-national-geographic-hobby-rock-tumbler-kit-rock-polisher](https://www.desertcart.vu/products/646717446-blue-marble-national-geographic-hobby-rock-tumbler-kit-rock-polisher)

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*Product available on Desertcart Vanuatu*
*Store origin: VU*
*Last updated: 2026-01-28*