---
product_id: 464168560
title: "KomeStone K1 Pro Brushless Rock Tumbler – Quiet 2.5LB Rock Polisher for Adults & Hobbyists with Adjustable Speed, Timer & Memory Function, Full Accessories Included, Ideal Gift for Rock Collectors"
brand: "komestone"
price: "$421.58"
currency: USD
in_stock: true
reviews_count: 5
category: "Kome Stone"
url: https://www.desertcart.us/products/464168560-komestone-k1-pro-brushless-rock-tumbler-quiet-2-5lb-rock
store_origin: US
region: United States of America
---

# Adjustable speed & timer with memory 20,000+ hrs brushless motor lifespan 3-layer water leakage protection KomeStone K1 Pro Brushless Rock Tumbler – Quiet 2.5LB Rock Polisher for Adults & Hobbyists with Adjustable Speed, Timer & Memory Function, Full Accessories Included, Ideal Gift for Rock Collectors

**Brand:** komestone
**Price:** $421.58
**Availability:** ✅ In Stock

## Summary

> 💎 Transform Rough Rocks into Stunning Gems—Join the Elite Rock Tumbling Revolution!

## Quick Answers

- **What is this?** KomeStone K1 Pro Brushless Rock Tumbler – Quiet 2.5LB Rock Polisher for Adults & Hobbyists with Adjustable Speed, Timer & Memory Function, Full Accessories Included, Ideal Gift for Rock Collectors by komestone
- **How much does it cost?** $421.58 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/464168560-komestone-k1-pro-brushless-rock-tumbler-quiet-2-5lb-rock)

## Best For

- komestone enthusiasts

## Why This Product

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

## Key Features

- • **Endless Polishing Power:** Cutting-edge brushless motor delivers over 20,000 hours of ultra-quiet, maintenance-free operation—your last rock tumbler ever.
- • **Support That Never Quits:** 2-year warranty plus free spare belts and lifetime customer service keep your creative journey smooth and unstoppable.
- • **Built to Last, Built for You:** Thick tier-level rubber barrel and triple water leakage protection ensure years of rugged, worry-free use.
- • **All-in-One Gemstone Mastery Kit:** Includes 1LB of 9 real rough stones, 4 polishing grits, ceramic media, jewelry fastenings, and a step-by-step guide—perfect for hobbyists and pros alike.
- • **Precision Control at Your Fingertips:** Adjust speed and timer with memory function for flawless, customized polishing every time.

## Overview

The KomeStone K1 Pro is a professional-grade rock tumbler featuring a pioneering brushless motor with a lifespan exceeding 20,000 hours, adjustable speed and timer with memory, and triple water leakage protection. This quiet 2.5LB polisher comes as a complete kit with real rough stones, multiple polishing grits, ceramic media, and jewelry fastenings, making it ideal for adults and hobbyists seeking precision, durability, and an all-in-one tumbling experience backed by a 2-year warranty and lifetime support.

## Description

Product description This is the brand flagship store owned by KomeStone, the original manufacturer and official outlet for all KomeStone-designed rock tumblers. As a leading innovator in this category, KomeStone has been consistently recognized for delivering advanced, dependable, and high-performance rock tumbling solutions. KomeStone provides top-of-the-line, manufacturer-grade professional rock tumbler kits, equipped with all functions and accessories needed to master rock tumbling and polishing. The KomeStone K1 Pro features our cutting-edge brushless motor design — the first rock tumbler built with this technology — offering more than 20,000 hours of work time and a lifespan beyond 10 years. We understand that rock tumbling is more than a hobby — it’s an investment. That’s why we stand behind every tumbler we sell with lifelong support, including replacement parts and technical guidance. Even after your warran*ty expires, we won’t disappear. You can count on us to keep your machine running smoothly for years to come. Your trust means everything to us. We’re here — not just to sell, but to support. Always. Trusted Choice in Rock Tumbling — Recognized for Quality & Performance Bring Every Stone to Life — Your Next Discovery Awaits Each stone hides a story waiting to be revealed. The moment when rough rocks turn smooth and begin to shine is pure magic — a reward for your patience, curiosity, and creativity. Watching your collection come to life is not just satisfying — it’s inspiring. Rock tumbling isn’t just about polishing stones — it’s about the process of discovery. Many families tell us it has become a shared hobby that helps children build focus, patience, and an appreciation for hands-on learning. Every polished gem becomes a reminder that beautiful things take time and care. To keep your adventure going, explore our refill grit sets — available in 4 lb, 6 lb (with ceramic media), and 10 lb (with ceramic & plastic pellets) — perfect for larger projects or long-term tumbling. And for that final, glassy brilliance, try our 8000 / 12000 grit aluminum oxide polish in your next batch. Thank you for your contribution! Welcome to a world of exquisite craftsmanship! Share your captivating stone creations with us, and we'll proudly showcase them across our desertcart details page and vibrant social media platforms. Your talent deserves a spotlight. Should any concerns arise, rest assured, we're dedicated to swift solutions. Instead of frustration, kindly connect with us for assistance. You may not know: Rock tumblers transform raw rocks into stunning gems for jewelry, crafting, and collections. For an exceptional shine, explore the art of polishing with high-quality grits, soap water, mineral oil, and meticulous steps. Practice perfects the process. Dig Deeper Is operating the rock tumbler effortless? Absolutely. Inside your package, discover a full-color Instruction book, guiding you through every step. It's so clear, even a 4-year-old can navigate it. Will the belts break? Currently, all of our rock tumblers come with PU belts, which is a new and upgraded, more durable option. Generally, these belts do not break, although special circumstances may occur. However, if the belt breaks, please replace it with one of the PU belts from the pack. After placing your order or receiving the product, please email to our after-sales service center to receive the additional 5 spare belts. You can find the specific after-sales email on the main image or in the manual. Rest assured, for any products issues, please reach out to us, and we will handle them properly. We are in the process of replacing all belts with PU belts, meaning that future belts are unlikely to break. Encountering a hiccup with your rock tumbler? First, consult our FAQs in the instruction book or on this page. For product concerns, connect with us directly. Our dedication to unparalleled service ensures swift resolutions. Ensure you include the polishing grits kit in your cart alongside this rock tumbler – together, they create the ideal combination for an impeccable finish, do not forget to add it into your cart. Your satisfaction is paramount. Trust that we're dedicated to elevating your experience and swiftly addressing every matter.

Review: Great results. Great customer service! - Loving my K1 tumbler! Have used it for almost a year now and the results are just as I expected! Some of the rocks come out lovely but primarily I use it for shaping sea glass and pottery sherds for jewelry. Works great! When I had an issue with the lid (totally my fault) they quickly shipped me a replacement part.
Review: Good Beginner Tumbler. Responsive Warranty Support. - A great introduction into rock tumbling, my family has enjoyed tumbling rocks and seeing the shiny results over the past 9-10 months. After about 9 months of regular almost constant use, the base unit stopped powering on. We reached out to the warranty support team and a replacement was sent fairly quickly and we were back to tumbling. Finding the email for the warranty was challenging but once we did find it the response was quick and the replacement was at our house within a week and a half. Great entry level product with quick support.

## Features

- Contact us now for extra durable belts for free for spare use.
- 2-Year Warranty for Free Exchange and Replacement. For any issues or if you have missed desertcart's 30-day return window, please reach out via our customer service email: support@komestone.com for help. THIS IS THE BRAND & SELLER COMMITMENT.
- YOUR LAST ROCK TUMBLER : This is the first and only rock tumbler that built in with the cutting-edge brushless motor, providing this advanced rock tumbler with more than 20,000 hours work and service life, and with the thicken tier level rubber barrel, which is also super durable for lasting for years, as well as three protections for water leakage is an extra big plus for years of use. So this is a professional rock tumbler of rough service.
- POLISH YOUR OWN GEMSTONES : Komestone tumbler kit makes tumbling even easier in an interesting way,it works for getting rouhgh and raw rocks smooth enough to use for jewlery, craft, collection, etc,. At last rough rocks will be turned out pretty gemstones with high quality and enough amount grits. Skill comes from practice.
- ALL IN ONE HOBBY & EDUCATIONAL TUMBLING KIT : Our KomeStone rock tumbler kit has everything that need for tumbling, including 1LB for 9 types of real rough gemstone rocks, the tumbler and the barrel, 3 belts and 4 polishing grits and ceramic contact media, sifter, screwdriver, Jewelry Fastenings, and illustrated tutorial guide. It's is a very decent and perfect gift for both children and adults!.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0B69CK2VG |
| Age Range Description | Even a 4 year old kid knows how to use it. |
| Age range (description) | Even a 4 year old kid knows how to use it. |
| Battery Description | No batteries required |
| Brand | KomeStone |
| Brand Name | KomeStone |
| Customer Reviews | 4.1 out of 5 stars 638 Reviews |
| Educational Objective | STEM, Concept Development Skills, Geology Learning, Patience, Jewelry Making, Patterning |
| Included Components | 1 pound of rocks & 4 bages of polishing grits & ceramic pellets, 1 rock tumbler base & 1 rubber barresl, 5+1 = 6 belts & user instructions, Customer service email: support@komestone.com ( Usually you'll get reply within 6 to 12 hours ), jewelry fastenings & adaptor & screwdriver & mesh strainer |
| Is Assembly Required | No |
| Item Dimensions | 28.5 x 22.9 x 13.1 centimeters |
| Item Type Name | Christmas gifts for kids Advanced Rock Tumbler Polisher Kit with Cutting-Edge Brushless Motor |
| Item Weight | 2.5 Pounds |
| Item dimensions L x W x H | 28.5 x 22.9 x 13.1 centimeters |
| Item weight | 2.5 Pounds |
| Manufacturer | KomeStone |
| Manufacturer Maximum Age (MONTHS) | 1200.0 |
| Manufacturer Minimum Age (MONTHS) | 8.00 |
| Manufacturer Part Number | CA-KS0613RT14 |
| Material Type | metal, ceramic Cutting-Edge Brushless Motor works more than 20 000 hours ) Tyre grade rubber Top quality of stainless steel 𝐂𝐏𝐒𝐈𝐀 & 𝐂𝐏𝐂 𝐂𝐞𝐫𝐭𝐢𝐟𝐢𝐞𝐝 Comes with 2-year warranty any issues or if you need 5 extra belts spare use at no cost please reach out via 𝘀𝘂𝗽𝗽𝗼𝗿𝘁@𝗸𝗼𝗺𝗲𝘀𝘁𝗼𝗻𝗲.𝗰𝗼𝗺. |
| Model Number | K1 Pro |
| Size | 11.3 x 9.17 x 5.87 inches |
| Theme | Geology |
| Unit Count | 1.0 Count |

## Product Details

- **Size:** 11.3 x 9.17 x 5.87 inches
- **Brand:** KomeStone
- **Theme:** Geology
- **Age range (description):** Even a 4 year old kid knows how to use it.
- **Material:** metal, ceramic Cutting-Edge Brushless Motor works more than 20 000 hours ) Tyre grade rubber Top quality of stainless steel 𝐂𝐏𝐒𝐈𝐀 & 𝐂𝐏𝐂 𝐂𝐞𝐫𝐭𝐢𝐟𝐢𝐞𝐝 Comes with 2-year warranty any issues or if you need 5 extra belts spare use at no cost please reach out via 𝘀𝘂𝗽𝗽𝗼𝗿𝘁@𝗸𝗼𝗺𝗲𝘀𝘁𝗼𝗻𝗲.𝗰𝗼𝗺.

## Images

![KomeStone K1 Pro Brushless Rock Tumbler – Quiet 2.5LB Rock Polisher for Adults & Hobbyists with Adjustable Speed, Timer & Memory Function, Full Accessories Included, Ideal Gift for Rock Collectors - Image 1](https://m.media-amazon.com/images/I/81VJIDLDVwL.jpg)
![KomeStone K1 Pro Brushless Rock Tumbler – Quiet 2.5LB Rock Polisher for Adults & Hobbyists with Adjustable Speed, Timer & Memory Function, Full Accessories Included, Ideal Gift for Rock Collectors - Image 2](https://m.media-amazon.com/images/I/81n1kfmNIYL.jpg)
![KomeStone K1 Pro Brushless Rock Tumbler – Quiet 2.5LB Rock Polisher for Adults & Hobbyists with Adjustable Speed, Timer & Memory Function, Full Accessories Included, Ideal Gift for Rock Collectors - Image 3](https://m.media-amazon.com/images/I/81yduboZegL.jpg)
![KomeStone K1 Pro Brushless Rock Tumbler – Quiet 2.5LB Rock Polisher for Adults & Hobbyists with Adjustable Speed, Timer & Memory Function, Full Accessories Included, Ideal Gift for Rock Collectors - Image 4](https://m.media-amazon.com/images/I/81iXlB1hZpL.jpg)
![KomeStone K1 Pro Brushless Rock Tumbler – Quiet 2.5LB Rock Polisher for Adults & Hobbyists with Adjustable Speed, Timer & Memory Function, Full Accessories Included, Ideal Gift for Rock Collectors - Image 5](https://m.media-amazon.com/images/I/71vhSzaF9YL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great results. Great customer service!
*by P***Y on 1 June 2026*

Loving my K1 tumbler! Have used it for almost a year now and the results are just as I expected! Some of the rocks come out lovely but primarily I use it for shaping sea glass and pottery sherds for jewelry. Works great! When I had an issue with the lid (totally my fault) they quickly shipped me a replacement part.

### ⭐⭐⭐⭐ Good Beginner Tumbler. Responsive Warranty Support.
*by A***R on 11 December 2025*

A great introduction into rock tumbling, my family has enjoyed tumbling rocks and seeing the shiny results over the past 9-10 months. After about 9 months of regular almost constant use, the base unit stopped powering on. We reached out to the warranty support team and a replacement was sent fairly quickly and we were back to tumbling. Finding the email for the warranty was challenging but once we did find it the response was quick and the replacement was at our house within a week and a half. Great entry level product with quick support.

### ⭐⭐⭐⭐⭐ Rock Tumbler: A Gem of a Machine (Mostly)
*by K***O on 16 July 2025*

Alright, rock enthusiasts and aspiring geologists, gather 'round! I recently acquired the KomeStone K1 Pro Professional Cutting-Edge Rock Tumbler, hoping to transform my collection of backyard pebbles into sparkling treasures worthy of a museum (or at least, my mantelpiece). This machine is, indeed, cutting-edge... or at least, it cuts through the rough edges of rocks with impressive dedication. It's like a tiny, geological spa for your stones, giving them the smooth, polished glow they've always dreamed of. My rocks are now so shiny, I'm pretty sure they're starting to develop egos. The "professional" part? Well, it certainly sounds important, and it feels pretty robust. It hums along, doing its thing, turning mundane rocks into mini works of art. I've spent an embarrassing amount of time just watching it spin, mesmerized by the slow, steady transformation. It's surprisingly therapeutic, almost like a lava lamp, but with more potential for bling. My only minor quibble is that I now have an overwhelming urge to collect all the rocks. Every walk is an archaeological dig, every pebble a potential masterpiece. My pockets are perpetually full, and my family is starting to eye me suspiciously when I bring home yet another bag of "future gems." This tumbler is so effective, it's turning me into a rock hoarder. So, if you're looking to polish your pebbles (and perhaps your patience), the KomeStone K1 Pro is a solid investment. Just be warned: you might develop a serious case of "rock fever." It's a gem of a machine, and I'm totally rocking my new hobby!

## Frequently Bought Together

- KomeStone K1 Pro Professional Cutting-Edge Brushless Motor Advanced Rock Tumbler Polisher Kit, Extra Large 2.5Lb Barrel with 3-Speed Motor 9-Day Timer, 6 Belts, Rough Gemstones, 4 Polishing Grits etc.
- Rock Tumbler Polishing Grits and Ceramic Tumbling Media Kit | Essential for Polishing, 4 Steps Rock Tumbling Refill Media, Polish up to 25 lbs of Rocks, Work with Any Rock Tumblers, for More Tumbles
- Rock Tumbler Belt 5-Pack for KomeStone K1, K1 Pro, K3 – Includes 2 Upgraded PU Belts + 3 Rubber Belts – Durable Replacement Kit, Not for K2 or K4

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-07-06*