---
product_id: 1678204
title: "Smithsonian Rock Tumbler STEM Kit Includes Charm Accessories for Charm Bracelets, Rings & Key Chains"
brand: "smithsonian"
price: "€ 134.88"
currency: EUR
in_stock: true
reviews_count: 8
url: https://www.desertcart.hr/products/1678204-smithsonian-rock-tumbler-stem-kit-includes-charm-accessories-for-charm
store_origin: HR
region: Croatia
---

# Includes 35" x 23" full-color instructional poster Create custom charms, rings & keychains Mechanical tumbling action for flawless polish Smithsonian Rock Tumbler STEM Kit Includes Charm Accessories for Charm Bracelets, Rings & Key Chains

**Brand:** smithsonian
**Price:** € 134.88
**Availability:** ✅ In Stock

## Summary

> ✨ Rock Your Style, Polish Your Passion! 🪨

## Quick Answers

- **What is this?** Smithsonian Rock Tumbler STEM Kit Includes Charm Accessories for Charm Bracelets, Rings & Key Chains by smithsonian
- **How much does it cost?** € 134.88 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/1678204-smithsonian-rock-tumbler-stem-kit-includes-charm-accessories-for-charm)

## Best For

- smithsonian enthusiasts

## Why This Product

- Trusted smithsonian brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **All-in-One Charm Creation Kit:** Design personalized bracelets, rings, and keychains that stand out in any crowd.
- • **STEM Learning Meets Creative Fun:** Engage your mind and hands with a hands-on science project that doubles as stylish accessory making.
- • **Step-by-Step Visual Guide Included:** Master the art of rock tumbling with an easy-to-follow, vibrant 35" x 23" poster.
- • **Transform Rough Rocks into Polished Gems:** Experience the satisfying mechanical tumbling that turns raw stones into smooth, shiny treasures.
- • **Perfect for Millennial Makers & Gift Givers:** Join a community of trendsetters turning nature’s raw beauty into wearable art.

## Overview

The Smithsonian Rock Tumbler STEM Kit combines mechanical tumbling technology with creative charm-making accessories, allowing users to polish rough stones and craft unique bracelets, rings, and keychains. It includes a large, colorful instructional poster to guide users through the process, making it an ideal STEM activity that blends science, art, and personal style.

## Description

Smithsonian Rock Tumbler STEM Kit Includes Charm Accessories for Charm Bracelets, Rings & Key Chains

## Features

- Tumble Rough Rocks Into Polished Stones
- Mechanical Tumbling Action
- Make Necklaces
- Charms
- Keychains
- Includes 35" X 23" Color Poster with Instructions

## Images

![Smithsonian Rock Tumbler STEM Kit Includes Charm Accessories for Charm Bracelets, Rings & Key Chains - Image 1](https://m.media-amazon.com/images/I/71EnRu9kMrL.jpg)
![Smithsonian Rock Tumbler STEM Kit Includes Charm Accessories for Charm Bracelets, Rings & Key Chains - Image 2](https://m.media-amazon.com/images/I/71EnRu9kMrL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ This is the Perfect gift for a busy little Child!
*by A***N on April 11, 2020*

In this time and era, (Coronavirus) this is the perfect gift for a busy child at home! This was given to a friend who has a child who loves rocks! She is tickled to death and I am so thankful I was able to give her this gift!

### ⭐⭐⭐⭐ Noisy, but fun
*by M***T on June 28, 2014*

We bought this for our nine- and seven-year-olds because they are way into rocks. We have bins of rocks they've collected so we figured, why not polish them?This kit comes with rocks to polish, three packets of grit (one for each step), the polisher itself, and various pieces to make jewelry/keychains/etc.The quick guide instructions are easy to follow. Parental guidance was needed for my kids. The process can get messy and you want to make sure the lid to the tumbler gets on tightly.This process takes a long time (about a month to get through all the steps). Patience is required. But the kids have been excited at the end of every step to see how the surfaces of the rocks have changed.This thing is noisy. The instructions say to put it somewhere where you won't be bothered by it and that's wholly accurate. The noisiest part is not the rocks but the motor. Since you have to run it continuously for weeks, be prepared for that. We have it in the garage and you can hear it lightly in the kitchen. It drives my wife nuts. But after a while it just sounds like background noise to me.Also be aware that you will have to buy extra grit to do more than one batch.The noise factor and the little bit of leakage from the tumbler container are why I give this four stars. It has made a nice polished rock product for my kids. That's all we wanted.

### ⭐⭐⭐⭐⭐ AWESOME!!
*by K***D on June 5, 2014*

My daughter (10 yrs) is an avid rock collector so we bought her this for her birthday! She loves it! She does not mind the long process at all, in fact she finds it very interesting!

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**Shop now:** [https://www.desertcart.hr/products/1678204-smithsonian-rock-tumbler-stem-kit-includes-charm-accessories-for-charm](https://www.desertcart.hr/products/1678204-smithsonian-rock-tumbler-stem-kit-includes-charm-accessories-for-charm)

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*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-03-02*