







Desertcart purchases this item on your behalf and handles shipping, customs, and support to South Africa.
โจ Turn rough rocks into polished treasures โ quietly, smartly, and stylishly! ๐ชจ
The KoolStone C1 Rock Tumbler Kit is a professional-grade, large-capacity (2.5LB) rock polishing system designed for adults and beginners. Featuring a thick rubber barrel that reduces noise by up to 75%, it offers smart digital controls with a 9-day timer, pause/resume, and memory functions for precise tumbling. The all-in-one kit includes assorted rough stones, polishing grits, ceramic media, jewelry findings, and an illustrated guide, supported by a 1-year warranty and responsive customer service, making it the perfect tool for hobbyists to create stunning polished gems at home.


















| ASIN | B09YM33DGD |
| Age Range Description | Suitable for children aged 13 and above |
| Best Sellers Rank | #238,519 in Kitchen ( See Top 100 in Kitchen ) #3,381 in Tumblers & Water Glasses |
| Brand Name | KoolStone |
| Color | Brush Edition: C1 |
| Customer Reviews | 4.5 out of 5 stars 2,266 Reviews |
| EU Spare Part Availability Duration | 1 Years |
| Educational Objective | STEM |
| 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 centimeters |
| Item Type Name | Rock Tumbler |
| Item Weight | 2.84 Kilograms |
| Manufacturer | KoolStone |
| Manufacturer Part Number | KS20220422 |
| Manufacturer recommended age | 4 years and up |
| Material Type | metal, metal 1.๏ผTyre grade rubber barrel top-quality stainless steel. 2.) If you received package missing parts or damaged no worries please feel free to reach out at [email protected] to take replacemenet. 3.) Any problems before purchasing please reach out at [email protected] to get answer. |
| Model Number | KS20220422 |
| Number of Batteries | 1 AA batteries required. |
| Number of Players | 1 |
| Operation Mode | Automatic |
| Power Source | manual |
| Set Name | C1 Rock Tumbler Kit |
| Size | L |
| Supported Battery Types | No batteries required |
| Theme | Perfect gift for rock lovers and hobbyists to create stunning polished stones. |
| Unit Count | 1 Count |
P**Y
Great Tumbler for a Happy Birthday Girl
My 8yr old daughter wanted a rock tumbler for her birthday and I am very happy with this model. It works great, itโs easy to use, and itโs easy to clean. The only thing I would say is that you should read the instructions closely because I didnโt read them closely enough for the final stage. If I had, my rocks would have been more polished had I made sure to follow the steps. That being said, it was my own fault because the instructions were clear and easy to follow, I was just in a hurry๐. Iโll update in the next batch when I follow the instructions with more precision. Customer service is very helpful and you get free belts and another rock sample if you send in the code. The tumbler does make some noise, but thatโs easily solved if you put it in your garage or a corn of your home away from everyone. My daughter loves how the rocks turned out and is very excited for the next round. As someone who always wanted a tumbler, I enjoy spending time with my daughter on this pursuit. I am very happy with the purchase and am looking forward to more rock adventures.
T**D
Great Tumbler! But do some research about proper tumbling technique before using.
Edit 11/29/23. Still love this tumbler. Had a problem with it. Contacted customer service and they took care of it right away. Awesome company, and the best service! Makes a terrific gift for the holidays. We got one for our grandkids this year. Got this tumbler for Christmas. Favorite gift this year. I Love going out and Beaching and finding Afates, Jasper and Quartz treasures. This unit is great! It's quiet, works well and the company has responsive customer service. It comes with a beautiful color instruction manual. The manual isn't bad. But I've learned from groups that tumble on Facebook and forums that there are several things tumbler manufactures get wrong in the instructions. The biggest one is speed. This tumbler spins too fast in all speeds and will bruise stones easily if you run it in speed 3 or 2. So always run it on speed 1. The manual lists RPMs at the axle I timed the RPMs of the barrel and that is rotating at 70-90. It is still faster than recommended but if you fill the barrel as close to 3/4 as possible along with ceramic filler you can minimize bruising. I included picks from my 2nd Tumble and they turned out good with speed 1 and mostly full tumbler. After first cycle you will need to have filler for other 3 cycles. Ceramic works but if you don't have enough ceramic to fill close to 3/4 I found decorative glass beads at the dollar store that work great as filler. I also use 2 tbs of Borax between each cycle and run for 2 hrs will clean the grit from rocks and tumbler pretty well which is essential por good polish. After polish cycle I run for 2 hrs with 2 tbs Ivory soap flakes to help increase shine. Also be careful in cycle one with small stone as this tumbler turns very fast and small stones can dissappear if you run it for a full week. So I check after 4 days to see if I should pull them out and sub in glass beads as filler. Some stones make take more than a week in first cycle. Agates take awhile and you don't wants pits or irregularities to carry grit into polish cycle. So I try to get very smooth in first stage. Anyways this tumbler is alot of fun and I am looking to purchase other tumblers now. I am particularly interested in a vibratory tumbler, they are much faster and use less grit. Potentially you can have polished rocks in a week instead of a month.
A**Q
Works great
Great little rock tumbler. My 7 year old has had so much fun tumbling rocks with this. It does a great job and I have no complaints. Booklets include gives good instruction, settings are easy, lid is easy to come in and off if you follow directions. Doesnโt come with enough tumbling powder but I ordered more knowing I would have to
A**R
Warranty
Daisy was excellent to deal with when I had a problem with the motor base! Fast, sweet and very professional!! Would recommend all day long!!
I**E
Worth the investment
Excellent tumbler. I have multiple of this model now and all going strong
Trustpilot
2 weeks ago
2 weeks ago