---
product_id: 119836791
title: "Blue Marble National Geographic Rock Tumbler Starter Kit (2016 Release)"
brand: "blue marble"
price: "1032 Lei"
currency: RON
in_stock: true
reviews_count: 6
category: "Blue Marble"
url: https://www.desertcart.ro/products/119836791-blue-marble-national-geographic-rock-tumbler-starter-kit-2016-release
store_origin: RO
region: Romania
---

# Transforms 9 real gemstones Reliable motor power Leak-proof rubber-lined barrel Blue Marble National Geographic Rock Tumbler Starter Kit (2016 Release)

**Brand:** blue marble
**Price:** 1032 Lei
**Availability:** ✅ In Stock

## Summary

> 💎 Sparkle your world—because ordinary rocks deserve extraordinary shine!

## Quick Answers

- **What is this?** Blue Marble National Geographic Rock Tumbler Starter Kit (2016 Release) by blue marble
- **How much does it cost?** 1032 Lei with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ro](https://www.desertcart.ro/products/119836791-blue-marble-national-geographic-rock-tumbler-starter-kit-2016-release)

## 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

- • **Learn & Impress:** Comes with an 8-page full-color guide to master rock tumbling science.
- • **STEM Meets Style:** Includes jewelry settings to craft wearable art from your polished gems.
- • **All-Inclusive Kit:** Everything you need—tumbler, stones, grits, sifter, and guide—in one box.
- • **Polish Like a Pro:** Turn everyday stones into dazzling gemstones with 4-stage grit polishing.
- • **Effortless Hobby Starter:** Plug-and-play design perfect for beginners and all ages.

## Overview

The Blue Marble National Geographic Rock Tumbler Starter Kit (2016) is a complete beginner-friendly set that transforms rough stones into polished gemstones using a reliable motor and leak-proof barrel. It includes 9 types of real rough gemstones, four polishing grits, jewelry fastenings, and an educational guide, making it a perfect STEM hobby for all ages.

## Description

Kick off an exciting new hobby with the Starter Rock Tumbler Kit from National Geographic! This kit has all the features and accessories you’ll need to transform rough rocks into extraordinary gemstones, start an awesome rock collection, and create beautiful jewelry. Contents and Features:- Reliable, long-lasting motor- Leak-proof, rubber-lined tumbler barrel- ½ pound of stones and four levels of grit- 5 Jewelry FasteningsThis high-quality beginner tumbler makes rock tumbling easy for kids and adults. Detailed instructions are easy to follow and will have you successfully tumbling in no time!The rough rocks provided (½ lb) contain nine different gemstones from around the world, and our tumbling grit is labeled by tumbling stage to make the process even easier! Choose your favorite gems and turn them into jewelry with the included necklace, key chain, ring, and two clip-on earring fastenings inside.This is a great way to inspire a love of a hobby that can last a lifetime! Plus, kids are astounded by the transformation they'll see once rocks are fully polished! It's also a fantastic STEM toy thanks to the detailed learning guide. There they'll learn how rocks are smoothed and polished over time in nature and discover fascinating facts about the gemstones in the kit!National Geographic Toys is proud to provide only the highest quality products, each backed by a complete satisfaction guarantee so that you can buy with confidence.About the National Geographic Society: With a mission to inspire people to care about the planet, the National Geographic Society is one of the world’s largest nonprofit scientific and educational organizations.

Review: Doesn't close after first time. - Doesn't close after first time. Too much Waste of money. Rubber gets loose tooo. Thats enough review for the first time
Review: It's ok

## 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, a sifter, jewelry settings, a full-color 8 page learning guide and nine types of REAL rough gemstones
- EASY TO USE for Rock Hounds of all ages and skill levels; plug it in and polishing begins

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B01I56RV0C |
| Assembly Required | No |
| Batteries Included | No |
| Batteries Required | No |
| Best Sellers Rank | #149,106 in Toys & Games ( See Top 100 in Toys & Games ) #4,080 in Science Toys & Kits |
| Colour | yellow |
| Country of Origin | USA |
| Customer Reviews | 4.3 4.3 out of 5 stars (10,665) |
| Date First Available | 31 August 2016 |
| Educational Objective(s) | STEM |
| Generic Name | Beginner's Rock Tumbler |
| Included Components | 5 Jewelry Fastenings, Leak-proof, rubber-lined tumbler barrel, Rock Tumbler, ½ pound of stones and four levels of grit |
| Item Dimensions LxWxH | 27.9 x 13.2 x 30.5 Centimeters |
| Item Weight | 1 kg 900 g |
| Item model number | NGTUMBLER2 |
| Language | German |
| Manufacturer | Discover with Dr. Cool |
| Manufacturer recommended age | 8 years and up |
| Material Care Instructions | See Included Manual |
| Material Type(s) | Silicone |
| Model Number | NGTUMBLER2 |
| Net Quantity | 1 Count |
| Number of Puzzle Pieces | 30 |
| Product Dimensions | 27.9 x 13.2 x 30.48 cm; 1.9 kg |
| Remote Control Included? | No |

## Product Details

- **Age Range (Description):** 8 years and up
- **Brand:** Blue Marble
- **Item Weight:** 1.9 Kilograms
- **Item dimensions L x W x H:** 27.9 x 13.2 x 30.5 Centimeters
- **Size:** 1 Count (Pack of 1)

## Images

![Blue Marble National Geographic Rock Tumbler Starter Kit (2016 Release) - Image 1](https://m.media-amazon.com/images/I/81HyxXKFvrL.jpg)

## Questions & Answers

**Q: Can this be used to tumble glass to make sea glass?**
A: Yes! I have a spot where I find lots of shards of glass and rare colors but they just aren’t “cooked” enough. I got the tumbler to finish them. The glass I have is real sea glass not fake nor bottles I break (which I have never done and won’t because I like that I find my glass and know it has a story from whence it came!) I have found it along beaches and rivers but it just needed some extra time to be perfect but because of the color rarity I wasn’t going to toss it back!

**Q: Where can I buy more grit?**
A: Amazon (there are alternatives if you want to search for a specific one you need: coarse (60/90 grit), medium (150/220 grit), fine (500 grit), rock polish (TXP aluminum oxide) but below are two choices that will contain all you’d need, are approx the same lbs of material, and will work equally well):

https://www.amazon.com/dp/B01MRKI4W0/ref=cm_sw_r_cp_api_i_8luBDbAX0440H

https://www.amazon.com/dp/B07PYFGT44/ref=cm_sw_r_cp_api_i_SkuBDbZFZBTVW

**Q: How many pounds/ounces of rocks can you put into the barrel with grit for tumbling?**
A: The Rock Tumbler can hold 1lb (16oz) of rocks in the barrel with the grit for tumbling.Thank you for your inquiry!

**Q: How long does it take from start to finish? And can you use any rocks or only the ones that come with it**
A: Each grade of sand is a different grit. About 3 weeks and one extra week to polish. You can run any rocks even ones that you find.

## Customer Reviews

### ⭐ Doesn't close after first time.
*by S***A on 31 March 2025*

Doesn't close after first time. Too much Waste of money. Rubber gets loose tooo. Thats enough review for the first time

### ⭐⭐⭐⭐ Review
*by H***Y on 10 January 2026*

It's ok

### ⭐⭐⭐⭐⭐ Review
*by N***O on 20 January 2019*

Volevo qualcosa per lucidare le piccole pietre che raccolgo al mare e questo buratto lo fa ad un prezzo accessibile.

## Frequently Bought Together

- NATIONAL GEOGRAPHIC Starter Rock Tumbling Kit - Durable Leak-Proof Polisher for Kids Complete Geology Hobby Science Kit, Rocks and Crystals Kids, A Great STEM Activity
- 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
- 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 Romania*
*Store origin: RO*
*Last updated: 2026-02-20*