--- product_id: 722396029 title: "Professional Rock Tumbling Kit - Patent-Pending Rock Polisher for Kids & Adults, Platinum Series Ultra Quiet, 2 lb. Barrel, Rocks, Grit, GemFoam Polisher, Rock Tumblers for Adults" brand: "blue marble" price: "¥123812" currency: JPY in_stock: true reviews_count: 5 category: "Blue Marble" url: https://www.desertcart.jp/products/722396029-professional-rock-tumbling-kit-patent-pending-rock-polisher-for-kids store_origin: JP region: Japan --- # Ultra-quiet sound-dampening cover Timer with day/hour settings & 3 speeds 2 lb. large barrel capacity Professional Rock Tumbling Kit - Patent-Pending Rock Polisher for Kids & Adults, Platinum Series Ultra Quiet, 2 lb. Barrel, Rocks, Grit, GemFoam Polisher, Rock Tumblers for Adults **Brand:** blue marble **Price:** ¥123812 **Availability:** ✅ In Stock ## Summary > 💎 Turn rough stones into dazzling gems—quietly, professionally, effortlessly! ## Quick Answers - **What is this?** Professional Rock Tumbling Kit - Patent-Pending Rock Polisher for Kids & Adults, Platinum Series Ultra Quiet, 2 lb. Barrel, Rocks, Grit, GemFoam Polisher, Rock Tumblers for Adults by blue marble - **How much does it cost?** ¥123812 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/722396029-professional-rock-tumbling-kit-patent-pending-rock-polisher-for-kids) ## Best For - blue marble enthusiasts ## Why This Product - Trusted blue marble brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **All-in-one starter kit:** Includes rough rocks, 4 grit bags, patented GemFoam polisher, strainer, and jewelry fastenings—everything to start crafting immediately. - • **Whisper-quiet operation:** Sound-dampening design means you can run it indoors or in shared spaces without disrupting your flow. - • **Award-winning STEM experience:** Backed by National Geographic and Toy of the Year winner Blue Marble, it’s the perfect blend of education, creativity, and fun. - • **Precision timing & speed control:** Customizable timer and 3-speed settings give you full control over your tumbling process for perfect results. - • **Professional-grade tumbling power:** 2-pound barrel lets you polish more rocks per batch, maximizing your creative output. ## Overview The Professional Rock Tumbling Kit by Blue Marble, part of National Geographic’s Platinum Series, features a large 2-pound barrel, ultra-quiet operation with a sound-dampening cover, and a versatile timer with day/hour settings and 3 speeds. This all-in-one kit includes rough rocks, polishing grit, a patented GemFoam polisher, and jewelry fastenings, making it ideal for both beginners and enthusiasts to create stunning polished stones indoors without noise disruption. ## Description Product Description National Geographic, the leader in professional rock tumblers, is proud to introduce the Platinum Series Ultimate Rock Tumbler Kit, our quietest, most robust, and feature-filled tumbler yet! The Ultimate Rock Tumbler set is a revolution in rock tumbling, with a host of professional rock tumbler features designed to make tumbling fun, easy, and much quieter than before: all-new, ultra-quiet design; sleek, professional exterior styling; large, water-tight, 2-lb. barrel assembly; easy-set timer with day/hour settings; variable tumbling speeds. Includes 1 lb. rough rocks, grit, strainer, patented GemFoam polisher & 5 jewelry settings. The Ultimate Rock Tumbler is our quietest model yet, and along with an all-new, sleek exterior, it's perfect for indoor tumbling, especially in smaller and shared spaces. The redesigned easy-set timer has settings for hours and days, and with three tumbling speeds and a patented agitate mode for softer rocks, precise tumbling couldn't be easier. The Ultimate Tumbler includes everything you need to start creating your own gorgeous gemstones right away. Along with 1 lb. of rough rocks, you get 4 bags of polishing grit, a newly-designed strainer and our patented GemFoam polisher that adds a stunning sheen to your finished gems. Also included are 5 jewelry settings to turn your gems into wearable treasures. The Ultimate Tumbler STEM science kit from National Geographic is the perfect way to encourage a love of geology and inspire kids and adults alike with the Earth's natural beauty! We make the highest quality hands-on science toys, and all products are backed by exceptional service. With a mission to inspire people to care about the planet, the National Geographic Society is one of the world's largest nonprofit scientific and educational organizations. Directions 1. Fill the 2-pound barrel with 1 pound of rough rocks, 4 bags of grit, and water. 2. Select one of the 3 speeds and set the timer for the desired duration (up to 7 days). 3. After tumbling, remove the rocks, clean the barrel, and add GemFoam and water for polishing. 4. Tumble again for a brilliant finish. Safety Warning No Warning Applicable Review: Present for partner - Got this for a present for my partner and he loves it. This one was a upgrade from the last one he has, it has a bigger barrel. And it really is super quiet. It's out in the garage and every time I'm out there, I keep thinking I have washing on. Highly recommend. Review: Really impressed with the noise difference, seems really reliable so far - Perfect for those new to the hobby. If you are looking for the cheapest best option and this is it (there are cheaper but they are not the best). I wouldn't start with a model of any lower quality or with any less features than this one. They aren't kidding when they say its quiet. Honestly sounds just as quiet if not quieter than a modern dish washer or dryer. You could easily have this set up anywhere in your house and just hear a consistent hum. It's not grumbly and annoying either, its just white noise. The tumblers performance seems good so far, I am running sea glass through it now. I like that it has a larger barrel. It's wider at least which makes it easier to reach into and in my opinion allows the parts to tumble better because they have slightly more space to fall when they go round each turn. I haven't been nice to the thing, letting it collect dust and mud as I check things. It's held up to the grit and grime of tumbling. I'll clean it fully once this session is complete but I don't want to stop and clean every time so I'm just letting it go and seeing what it can take. The settings are simple to understand and the display is nice and clear letting you know exactly where you are in your process. I usually just scribble the info about what is tumbling on the front with a dry erase marker which is great with this enclosure. Another cool feature is it will keep the current time saved in the event of a power outage so you can just plug it back in and go. If you are just starting out, don't go with the $40 Walmart entry level kit they offer, upgrade to this one, it'll be well worth it. Buy once, cry once. Otherwise you will go through 2-3 of those cheaper models before deciding the noise is bothering you regardless of how well they work. Enclosed is the way to go. ## Features - PROFESSIONAL TUMBLING - The Ultimate Tumbler delivers spectacular results with unparalleled ease of use! With its large 2-pound barrel, 3 selectable speeds; and timer with settings for days and hours. - QUIETEST TUMBLER - The Ultimate Rock Tumbler's all-new design includes a sound-dampening cover that makes tumbling quieter than ever, perfect for enthusiasts who tumble indoors, or in smaller or shared spaces. - ALL-IN-ONE TUMBLING KIT - This kit has everything you need to get started, including 1 pound of rough rocks, 4 bags of grit, 5 jewelry fastenings, a newly designed strainer, and our exclusive GemFoam rock polisher for a brilliant finish! - USE GEMFOAM FOR DAZZLING RESULTS - Your tumbled rocks will have an incredible shine thanks to our reusable GemFoam rock polisher. Just add GemFoam and water to the barrel after your final tumbling stage for a brilliant finish! - AWARD-WINNING PRODUCTS - Blue Marble, winner of the Toy Association's prestigious Toy of the Year Award, proudly develops products that foster education, imagination, and creativity, with a U.S. support team to ensure a stellar experience! ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0C2JN3S9M | | Age Range Description | 8 years and up | | Age range (description) | 8 years and up | | Brand | Blue Marble | | Brand Name | Blue Marble | | Customer Reviews | 4.3 out of 5 stars 586 Reviews | | Educational Objective | Development of exploratory skills and manual dexterity | | Included Components | Platinum Series Ultra Quiet Gem Polisher Kit | | Is Assembly Required | No | | Item Dimensions | 40.9 x 19.4 x 34.7 centimetres | | Item Type Name | Ultra Quiet Rock Tumbler Kit | | Item Weight | 907 g | | Item dimensions L x W x H | 40.9 x 19.4 x 34.7 centimetres | | Item weight | 907 g | | Manufacturer | Blue Marble | | Manufacturer Part Number | NGULTTUMBLER2 | | Material Type | Plastic | | Maximum Age Recommendation | 1188.0 | | Model Number | NGULTTUMBLER2 | | Set Name | Ultimate Rock Tumbler Kit | | Size | One Size | | Sub Brand | National Geographic | | Theme | Geology | | UPC | 810070622329 | | Unit Count | 1.0 count | ## Product Details - **Age range (description):** 8 years and up - **Brand:** Blue Marble - **Item dimensions L x W x H:** 40.9 x 19.4 x 34.7 centimetres - **Size:** One Size - **Theme:** Geology ## Images ![Professional Rock Tumbling Kit - Patent-Pending Rock Polisher for Kids & Adults, Platinum Series Ultra Quiet, 2 lb. Barrel, Rocks, Grit, GemFoam Polisher, Rock Tumblers for Adults - Image 1](https://m.media-amazon.com/images/I/81EF9KBITbL.jpg) ## Questions & Answers **Q: I need a replacement barrel, i have searched without finding one. where do get one?** A: For parts under warranty, please contact us directly using the customer service contact information locate on the box and/or the instruction manual. **Q: Is this dual voltage?** A: The unit has a solar panel plus batteries Just started to use the device about a month ago **Q: Can you make Seaglass in this Tumblr?** A: I put thicker glass pieces in the tumbler The glass came out with rounded corners Very happy with it **Q: The tumbler was so quiet for the first 5 days, then the knocking sound began. I’ve double checked the lid, etc. and it’s still happening. Why?** A: I’m guessing that it’s either the rocks or stones inside the tumbler, could be there is a small leak and there isn’t as much water inside. That was what happened to me. It could be the rollers need oiling also. The whole process is pretty simple, there aren’t a lot of things to check. Good luck! It’s a great hobby ## Customer Reviews ### ⭐⭐⭐⭐⭐ Present for partner *by A***A on 28 December 2024* Got this for a present for my partner and he loves it. This one was a upgrade from the last one he has, it has a bigger barrel. And it really is super quiet. It's out in the garage and every time I'm out there, I keep thinking I have washing on. Highly recommend. ### ⭐⭐⭐⭐⭐ Really impressed with the noise difference, seems really reliable so far *by P***K on 10 May 2024* Perfect for those new to the hobby. If you are looking for the cheapest best option and this is it (there are cheaper but they are not the best). I wouldn't start with a model of any lower quality or with any less features than this one. They aren't kidding when they say its quiet. Honestly sounds just as quiet if not quieter than a modern dish washer or dryer. You could easily have this set up anywhere in your house and just hear a consistent hum. It's not grumbly and annoying either, its just white noise. The tumblers performance seems good so far, I am running sea glass through it now. I like that it has a larger barrel. It's wider at least which makes it easier to reach into and in my opinion allows the parts to tumble better because they have slightly more space to fall when they go round each turn. I haven't been nice to the thing, letting it collect dust and mud as I check things. It's held up to the grit and grime of tumbling. I'll clean it fully once this session is complete but I don't want to stop and clean every time so I'm just letting it go and seeing what it can take. The settings are simple to understand and the display is nice and clear letting you know exactly where you are in your process. I usually just scribble the info about what is tumbling on the front with a dry erase marker which is great with this enclosure. Another cool feature is it will keep the current time saved in the event of a power outage so you can just plug it back in and go. If you are just starting out, don't go with the $40 Walmart entry level kit they offer, upgrade to this one, it'll be well worth it. Buy once, cry once. Otherwise you will go through 2-3 of those cheaper models before deciding the noise is bothering you regardless of how well they work. Enclosed is the way to go. ### ⭐⭐⭐⭐⭐ Works great but noisy? *by R***N on 12 July 2024* I love this tumbler! Sadly, the barrel popped only 3 months after I bought it and it's been making this clicking sound since. I think it was from tumbling pyrite? I cleaned it as best I could but the clicking persists. Can't find any tips on how to resolve it. ## Frequently Bought Together - NATIONAL GEOGRAPHIC Platinum Series Ultra Quiet Gem Polisher Kit - Patent-Pending for Kids & Adults, 2 lb. Barrel, Grit, GemFoam, Rock Tumblers - 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 - National Geographic Rock Tumbler Refill Kit - 5 lb. Mix of Rocks for Tumbling and Rough Gemstones - Rock Tumbler Supplies Include Rock Tumbler Grit and Polish Refill, and Unpolished Rocks --- ## 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.jp/products/722396029-professional-rock-tumbling-kit-patent-pending-rock-polisher-for-kids](https://www.desertcart.jp/products/722396029-professional-rock-tumbling-kit-patent-pending-rock-polisher-for-kids) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-10-12*