--- product_id: 222572366 title: "National Geographic 3 Lb. Rock Tumbler Kit for Kids and Adult Beginners" brand: "blue marble" price: "193388CFA" currency: XOF in_stock: true category: "Blue Marble" url: https://www.desertcart.sn/products/222572366-national-geographic-3-lb-rock-tumbler-kit-for-kids-adult store_origin: SN region: Senegal --- # 9-day timer for set-and-forget tumbling 3 lbs. of assorted rough gemstones included 3-speed motor for precise control National Geographic 3 Lb. Rock Tumbler Kit for Kids and Adult Beginners **Brand:** blue marble **Price:** 193388CFA **Availability:** ✅ In Stock ## Summary > 💎 Turn Rough Rocks into Polished Perfection—Your Next Gemstone Masterpiece Awaits! ## Quick Answers - **What is this?** National Geographic 3 Lb. Rock Tumbler Kit for Kids and Adult Beginners by blue marble - **How much does it cost?** 193388CFA with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.sn](https://www.desertcart.sn/products/222572366-national-geographic-3-lb-rock-tumbler-kit-for-kids-adult) ## 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 - • **Award-Winning STEM Fun:** Join thousands of creative minds with a Toy of the Year Award-winning kit that sharpens critical thinking and hand-eye coordination. - • **Pro-Grade Quiet Operation:** Experience 75% less noise with a stainless-steel lid and leak-proof barrel designed for long-lasting use. - • **All-Inclusive Gemstone Kit:** Start your gem-polishing journey immediately with 3 lbs. of raw rocks, 4 polishing grits, and 5 jewelry fastenings. - • **Effortless Precision Control:** Customize your polishing with a durable 3-speed motor and 9-day timer—set it and forget it! - • **Revolutionary GemFoam Polisher:** Achieve museum-quality shine using the reusable GemFoam for dazzling, professional-grade gemstones. ## Overview The National Geographic 3 Lb. Rock Tumbler Kit combines a powerful 3-speed motor and 9-day timer with a quiet, durable stainless-steel barrel to transform 3 pounds of raw gemstones into brilliantly polished treasures. Complete with polishing grits, jewelry fastenings, and the innovative reusable GemFoam polisher, this award-winning STEM kit is perfect for beginners aged 8 and up seeking a hands-on geology experience that blends education with creativity. ## Description desertcart.com: National Geographic 3 Lb. Rock Tumbler Kit for Kids and Adult Beginners | 3 Lb. Capacity Barrel, 3-Speed Motor, 9-Day Timer, Rough Rocks and Polishing Grit, Rock Polisher, Geology Hobby : Toys & Games ## Features - CREATE YOUR OWN GEMSTONES - Rock tumbling is a hugely popular hobby for kids and adults! This professional rock tumbler makes it fun and easy to turn rough rocks into beautifully polished gemstones, thanks to its simple operation and durable design. - A TUMBLER THAT'S MADE TO LAST - The durable motor has time and speed control settings so you can set it, and forget it. An improved, leak-proof barrel features a stainless-steel lid is 75% quieter overall than plastic tumbler barrels. - INCLUDES 3 LBS. OF ROCKS & MORE - This tumbling kit comes with everything you need: 3 lbs. of raw rocks with 9 types of gemstones, 5 jewelry fastenings, grit, strainer & GemFoam for a dazzling shine! - USE GEMFOAM FOR DAZZLING RESULTS - This rock tumbler kit stands apart from others thanks to our new, reusable GemFoam rock polisher! Add GemFoam and water to the barrel after your final tumbling stage and your gems will have incredible shine! - 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 | B08DL95CWL | | Age Range Description | 8 years and up | | Best Sellers Rank | #15,380 in Toys & Games ( See Top 100 in Toys & Games ) #7 in Kids' Rock Tumblers | | Brand Name | Blue Marble | | Customer Reviews | 4.5 out of 5 stars 5,087 Reviews | | Educational Objective | STEM, Concept Development Skills, Hand-Eye Coordination, Critical Thinking, Reasoning Exploratory Skills | | Included Components | Complete Rock Tumbler Kit, 3lb Assorted Rough Gems, 4 Stages of Polishing Grit,5 Jewelry Settings,GemFoam | | Item Dimensions | 12.76 x 10.31 x 6.69 inches | | Item Highlight | 3 Lb. Capacity Barrel, 3-Speed Motor, 9-Day Timer, Rough Rocks and Polishing Grit, Rock Polisher, Geology Hobby | | Item Type Name | Rock Tumbler Kit - 3 Lb. Extra Large Capacity Barrel | | Item Weight | 3.7 kg | | Manufacturer | JMW Sales, Inc. | | Manufacturer Part Number | NGTUMBLER3LB | | Manufacturer recommended age | 8 years and up | | Material Type | Plastic, Stainless Steel | | Model Number | NGTUMBLER3LB | | Number of Items | 1 | | Number of Packs | 1 | | Set Name | Set | | Size | One Size | | Sub Brand | National Geographic | | Theme | Geology | | UPC | 816448028694 | | Unit Count | 1 Count | ## Images ![National Geographic 3 Lb. Rock Tumbler Kit for Kids and Adult Beginners - Image 1](https://m.media-amazon.com/images/I/91Ijz8tKNVL.jpg) ## Questions & Answers **Q: Warranty on motor** A: All our tumblers include a 1-2 year warranty. For warranty assistance please contact us using the contact information found on the bottom of the package or in the instruction guide. **Q: Why is it saying undeliverable to any of my US addresses?** A: I experienced the same; it would not ship to my po box. I had it shipped to my daughter's house; it seem to like her address. **Q: What are the inside measurements of the 3lb barrel?** A: Our 3 lb barrel is approximately 3.25" x 5.5" **Q: How much does the barrel weigh?** A: Our 3 pound barrel with lid weighs 2 pounds. ## Frequently Bought Together - National Geographic Rock Tumbler Kit - 3 Lb. Extra Large Capacity Barrel with 3-Speed Motor & 9-Day Timer, Kit Includes Rocks for Tumbling and Rock Polisher Grit, Rock Tumbler for Adults and 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 - NATIONAL GEOGRAPHIC Rock Tumbler Refill Kit – 1Lb. Gemstones and Rocks for Tumbling including Unpolished Amethyst and Quartz – Rock Tumbler Supplies include Rock Tumbler Grit and Jewelry Accessories --- ## 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.sn/products/222572366-national-geographic-3-lb-rock-tumbler-kit-for-kids-adult](https://www.desertcart.sn/products/222572366-national-geographic-3-lb-rock-tumbler-kit-for-kids-adult) --- *Product available on Desertcart Senegal* *Store origin: SN* *Last updated: 2026-09-15*