--- product_id: 501413630 title: "KomeStone Rock Tumbler Grit Kit - 4LB Rock Polishing Grit & Ceramic Tumbling Media, 4-Step Polish Refill, Polish Up to 25 lbs of Rocks, Compatible with All Rock Tumblers & Polishers" brand: "komestone" price: "$114.33" currency: USD in_stock: true reviews_count: 13 category: "Kome Stone" url: https://www.desertcart.us/products/501413630-komestone-rock-tumbler-grit-kit-4lb-rock-polishing-grit-ceramic store_origin: US region: United States of America --- # polishes up to 25 lbs rocks reusable ceramic tumbling media 4-step precision grit system KomeStone Rock Tumbler Grit Kit - 4LB Rock Polishing Grit & Ceramic Tumbling Media, 4-Step Polish Refill, Polish Up to 25 lbs of Rocks, Compatible with All Rock Tumblers & Polishers **Brand:** komestone **Price:** $114.33 **Availability:** ✅ In Stock ## Summary > ✨ Transform your rough finds into museum-worthy gems! ## Quick Answers - **What is this?** KomeStone Rock Tumbler Grit Kit - 4LB Rock Polishing Grit & Ceramic Tumbling Media, 4-Step Polish Refill, Polish Up to 25 lbs of Rocks, Compatible with All Rock Tumblers & Polishers by komestone - **How much does it cost?** $114.33 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/501413630-komestone-rock-tumbler-grit-kit-4lb-rock-polishing-grit-ceramic) ## 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 - • **Mess-Free, Easy Use:** Individually sealed, wide-mouth jars with exact measurements for no-fuss, no-waste tumbling. - • **Bulk Polish Capacity:** Process up to 25 lbs of stones per kit—perfect for serious collectors and large batches. - • **Universal Compatibility:** Engineered to deliver consistent results with any rotary or vibratory rock tumbler. - • **Eco-Friendly Reusable Media:** Durable ceramic pellets balance barrels and can be reused across all polishing stages. - • **Pro-Grade 4-Step Polish System:** From rough to glass-like shine with silicon carbide & aluminum oxide precision grits. ## Overview The KomeStone Rock Tumbler Grit Kit is a comprehensive 4-step polishing refill set designed for professional-grade rock tumbling. It includes precisely measured silicon carbide and aluminum oxide grits plus 1 lb of reusable ceramic media, enabling users to polish up to 25 lbs of stones. Compatible with all tumbler types, this kit ensures consistent, high-shine results with easy-to-use, mess-free packaging—ideal for hobbyists and serious collectors alike. ## Description Product description This is the brand flagship store owned by KomeStone, as the original manufacture and brand outlet, KomeStone brand owns the designs of it’s all rock tumbler models. KomeStone provides the top-of-line manufacturer advanced professional rock tumbler kits, featuring with all functions and accessories you need to master rocks tumbling and polishing. This comprehensive grit kit provides enough media to polish up to 25 pounds of rocks! 1 lb - Step 1 Coarse Grit 1 lb - Step 2 Medium Grit 1/2 lb - Step 3 Pre-Polish 1/2 lb - Step 4 Final Polish 1 lb - Tumbling Media Each grit type is precisely weighed to ensure the optimal amount for each tumbling stage: Steps 1 and 2 require 1 lb each, while Steps 3 and 4 need only 1/2 lb each. To ensure consistency, all grits are packaged in uniform-sized jars. As a result, you may notice variations in how full the jars appear due to the differing weights and densities of each grit type. Please rest assured that every jar contains the precise weight stated on the label. At KomeStone, our rapid growth and loyal customer base are built on a foundation of integrity and honest business practices. KomeStone rock tumbler grits—specially designed to work with any rock tumbler! If you’re using a rock tumbler, don’t miss the chance to try our premium polishing grits for outstanding, high-shine results. Rock Tumbler Ceramic Media Weight: 1LB Reusable Fill up to 1/2 to 2/3 of the Rocks Can be used in every stage and through the whole tumbling process Review: Great for everyone beginner to pro - This is great for beginners and avid rock hunters . My wife and I just started rock hunting last year. You can turn your finds into beautiful art. We are very impressed on the sturdiness and ease of use. Assembly was easy, It comes with easy follow instructions just take your time if you are a beginner. It comes with a nice assortment of rocks and plenty of product to get started, the controls are simple and instructions are clear even for a beginner, appears to be well made. It is very quiet for what it does . Nice size for the different stages of tumbling rocks. We have found that doing multiple batches in the different stages then combining them as the rocks reduce in size that way you are not wasting polishing grit. Rock Tumbler well packed for shipping and reasonably priced. Review: Cool little rock tumbler - I’ve been running the K2 Elite nonstop for over a month, and it’s been rock solid. It works exactly as advertised—no issues, no stopping, just consistent performance. The biggest standout is how quiet it is. The rubber barrel and enclosed housing make a huge difference compared to other tumblers I’ve used. It’s more of a low hum than that loud rattling noise. It came with extra belts, but I haven’t needed any yet, which says a lot about durability. Build quality feels solid, and the 3 lb capacity is perfect for decent-sized batches. Customer service has also been excellent—they respond quickly and are actually helpful. They also send a free bag of rocks on top of the bag that came with it, you just have to email them. Bottom line: Quiet, reliable, and well-built. Definitely one of the better tumblers I’ve owned. ## Features - Complete 4-Step Rock Tumbler Grit Kit - Everything In One Box: Includes 1 lb 60-grit coarse silicon carbide (Step 1: removes surface scratches and shapes the stone), 1 lb 150-grit medium silicon carbide (Step 2: smooths rough surfaces), 1/2 lb 600-grit fine silicon carbide (Step 3: creates a pre-polish sheen), 1/2 lb 1200-grit aluminum oxide (Step 4: delivers a brilliant, glass-like final polish), and 1 lb ceramic tumbling media for barrel balance. - Polish Up To 25 Lbs Of Rocks Per Kit - High Efficiency: Each 4LB kit provides enough grit and media to process up to 25 lbs of stones across multiple batches. Cost-effective for continuous projects, large-capacity tumblers, and serious collectors who need reliable, repeatable results without frequent restocking. - Compatible With All Rock Tumblers - Formulated By Tumbler Experts: Works with any rotary or vibratory rock tumbler. Developed by KomeStone - makers of the best-selling brushless motor rock tumbler in the U.S. - this grit kit is engineered to deliver consistent, professional-grade results across all tumbler types and stone hardness levels. - Easy To Measure, Easy To Store - No Mess: Each grit stage comes in individually sealed bottles with wide-mouth openings and secure screw-top closures. Use 2 tablespoons (approx 25-30g) of grit per 1 lb of rocks per stage. Tumble 7-10 days per step. Ceramic media can be reused across all stages - no need to remove between washes. - Transform Rough Rocks Into Glass-Like Gems: Suitable for rocks, gemstones, sea glass, and metals. Whether you are a beginner starting your first tumbling project or an experienced collector refining your technique, this complete grit kit delivers professional-grade results. Makes a great gift for rock enthusiasts, geology students, and lapidary hobbyists of all ages. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0B74KYP44 | | Age Range Description | 13 years and up | | Brand Name | KomeStone | | Color | Blue | | Customer Reviews | 4.5 out of 5 stars 843 Reviews | | Educational Objective | Gift & Stem Project Tool | | Included Components | Grit #1: Silicon Carbide（1 lb）, Grit #2: Silicon Carbide（1 lb）, Grit #3: Silicon Carbide（0.5 lb）, Grit #4: Aluminum Oxide（0.5 lb）, Non-abrasive ceramic filler pelltes（1 lb） | | Is Assembly Required | No | | Item Dimensions | 2.4 x 2.4 x 3.5 inches | | Item Weight | 2.15 Kilograms | | Manufacturer | KomeStone | | Manufacturer Maximum Age (MONTHS) | 1200.0 | | Manufacturer Minimum Age (MONTHS) | 156.0 | | Manufacturer Part Number | KS0720RT17 | | Material Type | Silicon Carbide & Aluminum Oxide | | Model Number | KS0720RT17 | | Number of Players | 1 | | Operation Mode | Manual | | Power Source | Manual | | Set Name | 4-Step Rock Tumbler Grit Kit (4LB) | | Size | B: Essential for Polishing (4 Pounds) | | Supported Battery Types | No batteries required | | Theme | Rock Tumbler Grit and Polish Refill Kit | | Unit Count | 4 Count | ## Images ![KomeStone Rock Tumbler Grit Kit - 4LB Rock Polishing Grit & Ceramic Tumbling Media, 4-Step Polish Refill, Polish Up to 25 lbs of Rocks, Compatible with All Rock Tumblers & Polishers - Image 1](https://m.media-amazon.com/images/I/81ZGtg7r4KL.jpg) ## Available Options This product comes in different **Color** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Great for everyone beginner to pro *by R***5 on March 7, 2026* This is great for beginners and avid rock hunters . My wife and I just started rock hunting last year. You can turn your finds into beautiful art. We are very impressed on the sturdiness and ease of use. Assembly was easy, It comes with easy follow instructions just take your time if you are a beginner. It comes with a nice assortment of rocks and plenty of product to get started, the controls are simple and instructions are clear even for a beginner, appears to be well made. It is very quiet for what it does . Nice size for the different stages of tumbling rocks. We have found that doing multiple batches in the different stages then combining them as the rocks reduce in size that way you are not wasting polishing grit. Rock Tumbler well packed for shipping and reasonably priced. ### ⭐⭐⭐⭐⭐ Cool little rock tumbler *by C***X on February 13, 2026* I’ve been running the K2 Elite nonstop for over a month, and it’s been rock solid. It works exactly as advertised—no issues, no stopping, just consistent performance. The biggest standout is how quiet it is. The rubber barrel and enclosed housing make a huge difference compared to other tumblers I’ve used. It’s more of a low hum than that loud rattling noise. It came with extra belts, but I haven’t needed any yet, which says a lot about durability. Build quality feels solid, and the 3 lb capacity is perfect for decent-sized batches. Customer service has also been excellent—they respond quickly and are actually helpful. They also send a free bag of rocks on top of the bag that came with it, you just have to email them. Bottom line: Quiet, reliable, and well-built. Definitely one of the better tumblers I’ve owned. ### ⭐⭐⭐⭐⭐ Great tumbler *by A***E on December 26, 2025* I love this tumbler. I haven't had any issues with it since it was bought and I have been running it nonstop. I like that the belt is in a compartment to itself so it doesn't spin lubricant everywhere. You should keep your belt lubricated with a 3in1 oil or clipper oil so they don't dry and break. It's a little quieter than the ones that are out in the open. But it still going to be somewhat loud, it is tumbling rocks. It's durable and seems to be holding up. The barrel has a good thickness to it isn't showing any signs of wear and tear yet. I do like that it has a 3lb storage capacity. It holds a lot more rocks than the other small rock tumblers. It does come with some starter rocks and if you reach out to them after purchasing they will send some free rocks as well. I do believe it is a good value for everything that came with the machine. I think this tumbler is a good addition for any person that is interested in rock tumbling. ## Frequently Bought Together - 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 Kit, K1 Professional Large 2.5LB Capacity Edition - Memory Function, Digital Timer & Variable Speeds: Create Stunning Gems Full Accessories Included - Rock Tumbler Belt 5-Pack for KomeStone K1, K1 Pro, K3 Rock Tumblers – Replacement Belt Kit, Nor for K2 or K4 Model --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.us/products/501413630-komestone-rock-tumbler-grit-kit-4lb-rock-polishing-grit-ceramic](https://www.desertcart.us/products/501413630-komestone-rock-tumbler-grit-kit-4lb-rock-polishing-grit-ceramic) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-07-07*