--- product_id: 725864907 title: "C1 Rock Tumbler Kit - Professional Large 2.5LB Capacity, Up to 5X More Noise Cancelling, Adjustable Timer & Speed with Full Accessories & Memory Function" brand: "koolstone" price: "VT69468" currency: VUV in_stock: true reviews_count: 5 category: "Kool Stone" url: https://www.desertcart.vu/products/725864907-c1-rock-tumbler-kit-professional-large-2-5lb-capacity-up store_origin: VU region: Vanuatu --- # 75% noise reduction 9-day timer with memory 2.5LB large capacity C1 Rock Tumbler Kit - Professional Large 2.5LB Capacity, Up to 5X More Noise Cancelling, Adjustable Timer & Speed with Full Accessories & Memory Function **Brand:** koolstone **Price:** VT69468 **Availability:** ✅ In Stock ## Summary > 💎 Turn rough rocks into polished treasures—quietly, quickly, and effortlessly! ## Quick Answers - **What is this?** C1 Rock Tumbler Kit - Professional Large 2.5LB Capacity, Up to 5X More Noise Cancelling, Adjustable Timer & Speed with Full Accessories & Memory Function by koolstone - **How much does it cost?** VT69468 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/725864907-c1-rock-tumbler-kit-professional-large-2-5lb-capacity-up) ## Best For - koolstone enthusiasts ## Why This Product - Trusted koolstone brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Complete All-In-One Kit:** Includes everything from rough stones to polishing grit and accessories—start your rock tumbling journey immediately. - • **Whisper-Quiet Operation:** Experience up to 75% noise reduction with the advanced rubber barrel—tumble anytime without disruption. - • **Precision Polishing Control:** 3-speed settings and a 9-day programmable timer with memory function for flawless, customized results. - • **Family-Friendly Creative Fun:** Perfect for parent-child projects, combining education and hands-on creativity in one sleek package. - • **Maximize Your Gem Collection:** Generous 2.5LB rubber barrel lets you polish more stones per cycle—more gems, less waiting. ## Overview The KoolStone C1 Rock Tumbler Kit features a large 2.5LB rubber barrel that operates 75% quieter than plastic alternatives. With 3 adjustable speeds, a 9-day timer with memory and automatic shutoff, it delivers faster, precise polishing. The comprehensive kit includes rough stones, polishing grits, ceramic media, spare belts, and all necessary accessories, making it ideal for hobbyists and families eager to transform ordinary rocks into stunning gems. ## Description Product description This large 2.5LB capacity tumbler, 75% quieter than most plastic barrels, comes with a 1-year warranty for your peace of mind. The kit includes a rock tumbler base, a rubber barrel, 1LB of assorted rough rocks, 6 belts for spare use, 4 bags of polishing grits, a bottle of ceramic tumbling media, a power adapter, jewelry fastenings, a mesh strainer, and an illustrated learning booklet. The 3-speed controls and 9-day timer with automatic shutoff and memory function ensure faster polishing time and better polishing results. Safety Warning Please always keep your hair away. Review: Great product. Works well, tumbles relatively quietly in the rubber drum. Easy to load/unload rocks for the various stages. Easy to set up the duration in days and speed required. Excellent instruction manual. Would recommend to buy for anyone interested in seeing the beauty hidden away in some fairly common rocks.. Review: It is a solid little unit that seems to do its job. Our rocks didn't come out quite as polished as we'd hoped, but I think it's because we did not clean out the unit as thoroughly as we should have between steps. We are looking forward to running it through its sequence with fresh rocks again soon. We did have a minor breakdown with the lid, but Daisy replaced it quickly and at no cost to us. ## Features - Belts are consumables, so we'd like to offer extra 5 belts for spare use. - START A TUMBLING JOURNEY -- Koolstone Rock Tumbler turn rough rocks into polished gems, then you will be very excited to see the stones change with each cycle. That's a fun process of rock tumbling and a family little project for parent-child endeavor. - 2.5LB LARGE CAPACITY & 75% QUIETER -- An updated features is that KoolStone Rock Tumbler has a large 2.5LB capacity. Which allows to tumbler more rocks each time. Another improvement is the quieter barrel. Rubber material which has 75% quieter than most plastic barrel. - FASTER POLISHING TIME & BETTER POLISHING RESULTS -- 3-speed controls (providing more granular tumbling results), a 9-day timer (with automatic shutoff feature and memory function), all displayed on clear screen, letting you easily hone your settings for precise tumbling each time..EVERYTHING YOU NEED FOR TUMBLING IS HERE -- KoolStone Rock Tumbler has everything you need to create polished gemstones. Rock tumbler, 2. - International products have separate terms, are sold from abroad and may differ from local products, including fit, age ratings, and language of product, labeling or instructions. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B09YM33DGD | | Age Range Description | Adult | | Best Sellers Rank | 3,319,238 in Home & Kitchen ( See Top 100 in Home & Kitchen ) 510 in Polishing & Buffing | | Brand Name | KoolStone | | Colour | C1 | | Customer Reviews | 4.5 4.5 out of 5 stars (2,134) | | Educational Objective | Creative Skills | | Included Components | 1-Year Warranty Card, Illustrated Learning Booklet, 1A Power Adapter, Jewelry Fastenings, Mesh Strainer, Screwdriver, 1LB Assorted Rough Rocks, 3 Belts for Spare Use, 4 Bags of Polishing Grits, 1 Bottle Ceramic Tumbling Media, Rock Tumbler Base, 2.5LB Capacity Rubber Barrel | | Indoor Outdoor Usage | Indoor | | Is Assembly Required | No | | Item Dimensions | 28.5 x 22.9 x 14.5 centimetres | | Item Type Name | Rock Tumbler | | Item Weight | 2.84 Kilograms | | Manufacturer | KoolStone | | Manufacturer Part Number | KS20220422 | | Material Type | Rubber | | Maximum Age Recommendation | 1188.0 | | Minimum Age Recommendation | 96.00 | | Model Number | KS20220422 | | Number of Batteries | 1 AA batteries required. | | Number of Players | 1 | | Operation Mode | Manual | | Power Source | AC adapter/electrical | | Set Name | C1 Rock Tumbler Kit | | Size | L | | Supported Battery Types | AA batteries | | Theme | Perfect gift for rock lovers and hobbyists to create stunning polished stones. | | Unit Count | 1.0 count | ## Images ![C1 Rock Tumbler Kit - Professional Large 2.5LB Capacity, Up to 5X More Noise Cancelling, Adjustable Timer & Speed with Full Accessories & Memory Function - Image 1](https://m.media-amazon.com/images/I/81zDGxdlUJL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Review *by A***S on 30 March 2026* Great product. Works well, tumbles relatively quietly in the rubber drum. Easy to load/unload rocks for the various stages. Easy to set up the duration in days and speed required. Excellent instruction manual. Would recommend to buy for anyone interested in seeing the beauty hidden away in some fairly common rocks.. ### ⭐⭐⭐⭐ Review *by D***H on 6 February 2026* It is a solid little unit that seems to do its job. Our rocks didn't come out quite as polished as we'd hoped, but I think it's because we did not clean out the unit as thoroughly as we should have between steps. We are looking forward to running it through its sequence with fresh rocks again soon. We did have a minor breakdown with the lid, but Daisy replaced it quickly and at no cost to us. ### ⭐⭐⭐⭐⭐ Review *by G***H on 7 March 2026* For a first time rock tumbler this is great! Super easy to use- the instructions are clear & simple to follow. The machine is easy to use & pretty quiet for what it is, but I also have nothing to compare it with. It's small enough I'd take it camping with me as long as I've got an electric site. I've just started the second phase & the first phase worked well! ## Frequently Bought Together - KoolStone C1 Rock Tumbler Kit - Professional Large 2.5LB Capacity, Up to 5X More Noise Cancelling, Adjustable Timer & Speed with Full Accessories & Memory Function, Ideal for Adults Kids - 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 - 5 Packs of Rock Tumbler Replacement Belts, Only Compatible with KoolStone C1, C1 Pro & C3 Rock Tumbler, 78 * 4mm --- ## 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.vu/products/725864907-c1-rock-tumbler-kit-professional-large-2-5lb-capacity-up](https://www.desertcart.vu/products/725864907-c1-rock-tumbler-kit-professional-large-2-5lb-capacity-up) --- *Product available on Desertcart Vanuatu* *Store origin: VU* *Last updated: 2026-05-11*