--- product_id: 739608310 title: "NATIONAL GEOGRAPHIC Stone Rotating Drum Complete Media Kit Stone Polishing Grit Ceramic Pellets Patented Polishing Foam Stone Polishing Kit Madagascar Rock" brand: "blue marble" price: "8552924₫" currency: VND in_stock: true reviews_count: 5 category: "Blue Marble" url: https://www.desertcart.vn/products/739608310-national-geographic-stone-rotating-drum-complete-media-kit-stone-polishing store_origin: VN region: Vietnam --- # Patent-pending GemFoam for unmatched shine 1.5 lbs ceramic media reduces noise & breakage 4-stage silicone carbide grit for precision shaping NATIONAL GEOGRAPHIC Stone Rotating Drum Complete Media Kit Stone Polishing Grit Ceramic Pellets Patented Polishing Foam Stone Polishing Kit Madagascar Rock **Brand:** blue marble **Price:** 8552924₫ **Availability:** ✅ In Stock ## Summary > ✨ Elevate your rock game—because ordinary stones don’t make the cut! ⚙️ ## Quick Answers - **What is this?** NATIONAL GEOGRAPHIC Stone Rotating Drum Complete Media Kit Stone Polishing Grit Ceramic Pellets Patented Polishing Foam Stone Polishing Kit Madagascar Rock by blue marble - **How much does it cost?** 8552924₫ with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/products/739608310-national-geographic-stone-rotating-drum-complete-media-kit-stone-polishing) ## 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 - • **GemFoam Brilliance:** Add the patented foam for a dazzling, showroom-quality shine that turns heads. - • **Ceramic Media Magic:** Quiets your tumbler, cushions stones, and boosts grit efficiency—rock tumbling, upgraded. - • **Confidence in Every Kit:** Backed by National Geographic’s STEM promise and satisfaction guarantee—polish with peace of mind. - • **Universal Compatibility:** Works seamlessly with any rock tumbler—no upgrades needed, just better results. - • **Precision 4-Stage Grit System:** From rough shaping to flawless polish, every step engineered for perfection. ## Overview The National Geographic Stone Rotating Drum Complete Media Kit is a premium rock tumbling accessory set featuring a 4-stage high-quality silicone carbide grit, 1.5 lbs of ceramic media to reduce noise and breakage, and a patent-pending GemFoam polishing media that delivers an exceptional shine. Compatible with all rock tumblers, this kit is designed to optimize every stage of the tumbling process, ensuring professional-grade polished stones with ease. Perfect for hobbyists and STEM enthusiasts aged 8 and up, it combines durability, efficiency, and a satisfaction guarantee from a trusted global brand. ## Description National Geographic Rock Tumbler Supplies Pack includes all the lock tumbling accessories you need to dramatically improve your rock polishing results. This complete media kit includes: - 4 Stage Silicone Carbide - Polishing Grit Compound - 1.5 lb Ceramic Media - 30 g Gem Foam - 10 ml Scoop - Easy to Follow Instructions - 4 Stage Bulk Rock Tumbling Grit is a high quality silicone carbide material. For polishing rough rocks. Finished with a smooth gemstone. The first rock tumbler grit stage provides the initial shape. The second smooths the surface of the rock, the third is pre-sanded the rock, and the fourth provides the final grinding. The grit is packaged in a safe screw-top container for easy storage. Add ceramic tumbling pellets to the mix for better results. Ceramic media effectively disperses the grit to the rock surface during tumbling, reducing the noise of the tumbler, acting as a filler in small batches, reducing rock breakage throughout all grit cycles. One of the most exciting elements of this tumbling accessory pack is the patent pending GemFoam. This tumbling media is specifically designed to add a dazzling shine to your polished stones. Simply add GemFoam water and rocks to the tumbler barrel and you can polish your stone in a few days The instructions in the kit provide detailed instructions on how to use all tumbling media for optimal results. This pack is compatible with all rock tumblers, but for best results, National Geographic Toys only offer the highest quality products. We also offer a complete satisfaction guarantee so you can buy with confidence. It is a mission to stimulate people who care about the planet, and is the National Geographic Association (National Geographic Association). It's one of the world! The largest non-profit organization. Review: good stuff Review: Rock Tumbling kit ## Features - High Quality This lock polisher grit refill pack has enough high quality silicone carbide grit to produce a dazzling polish of approximately 8-10 lbs. Stones, gemstones, glass, etc - Improves the results of rock tumbling. The ceramic tumbler media makes the whole rock tumbling process more efficient, improves the supply of the locking tumbling grit, quiets the tumbler noise, reduces lock breakage, and acts as a filler for small batches - A new way to brighten up your tumbled rocks. GemFoam is a unique locking polisher media that brings unprecedented shine to your tumbled lock. After the final grit cycle, simply add the patent-pending rock polishing media to your tumbler and get great results - Works with any rock tumbler. This set of tumbling supplies is safe to use on any rock tumbler. Tumbling grits, ceramic pellets, and GemFoam together to improve the rock tumbling performance and achieve impressive results - Satisfaction Guaranteed. National Geographic STEM Series offers quality products that are full of fun. If your experience is less than special, please let us know. We will make it right ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B08B7GRBK6 | | Amazon Bestseller | #335,705 in DIY, Tools & Garden ( See Top 100 in DIY, Tools & Garden ) #3,213 in Hardware Locks | | Batteries Included | No | | Batteries Required? | No | | Customer Reviews | 4.7 4.7 out of 5 stars (1,988) | | Date First Available | September 2, 2020 | | Item model number | NGFOMCERGRIT | | Manufacturer recommended age | 8 years and up | | Material Type(s) | Multiple | | Model Number | NGFOMCERGRIT | | Number of Game Players | 1 | | Product Dimensions | 19 x 13.51 x 13.89 cm; 2.52 kg | | Target Gender | Unisex | ## Images ![NATIONAL GEOGRAPHIC Stone Rotating Drum Complete Media Kit Stone Polishing Grit Ceramic Pellets Patented Polishing Foam Stone Polishing Kit Madagascar Rock - Image 1](https://m.media-amazon.com/images/I/91oyBF1mZaL.jpg) ![NATIONAL GEOGRAPHIC Stone Rotating Drum Complete Media Kit Stone Polishing Grit Ceramic Pellets Patented Polishing Foam Stone Polishing Kit Madagascar Rock - Image 2](https://m.media-amazon.com/images/I/81d0OZN7YCL.jpg) ![NATIONAL GEOGRAPHIC Stone Rotating Drum Complete Media Kit Stone Polishing Grit Ceramic Pellets Patented Polishing Foam Stone Polishing Kit Madagascar Rock - Image 3](https://m.media-amazon.com/images/I/81zuTQLidLL.jpg) ![NATIONAL GEOGRAPHIC Stone Rotating Drum Complete Media Kit Stone Polishing Grit Ceramic Pellets Patented Polishing Foam Stone Polishing Kit Madagascar Rock - Image 4](https://m.media-amazon.com/images/I/816Sm4q3W2L.jpg) ![NATIONAL GEOGRAPHIC Stone Rotating Drum Complete Media Kit Stone Polishing Grit Ceramic Pellets Patented Polishing Foam Stone Polishing Kit Madagascar Rock - Image 5](https://m.media-amazon.com/images/I/91t3ZL-7PXL.jpg) ## Questions & Answers **Q: Can Gemfoam be purchased separately?** A: Yes, we do sell the Polishing Foam separately. **Q: What is the difference between this and product # ngbulkgrit?** A: Thank you so much for your inquiry. This item (the Complete Media Kit) contains the grit along with GemFoam to assist in the polishing stage and Ceramic Pellets to reduce rock breakage along with making the tumbling process more quiet. The Bulk Grit does not contain the GemFoam or pellets, but does contain the grit. **Q: How much of each medium is included in this accessories set?** A: The jars shown hold approximately 2/3 of a cup, so plan on buying bulk bags in the near future. **Q: My lid cracked and i need a new one. Are there replacement parts avaliable to buy?** A: Not sure if you are referring to the tumbler canister lid but you will find replacement parts on Ebay under rock tumbler parts ## Customer Reviews ### ⭐⭐⭐⭐⭐ good stuff *by S***E on February 26, 2025* ### ⭐⭐⭐⭐⭐ Rock Tumbling kit *by K***Y on August 28, 2025* ### ⭐⭐⭐⭐⭐ Quality and functionally. *by R***T on June 17, 2024* ## Frequently Bought Together - Blue Marble National Geographic Rock Tumbler Media – The Ultimate Rock Polishing Supplies Kit, 4 Stage Bulk Grit, 1.5 Pounds of Ceramic Pellets, GemFoam Polishing Tumbling Media - National Geographic Rock Tumbler Kit – Hobby Edition Includes Rough Gemstones, and 4 Polishing Grits, Great STEM Science Kit for Geology Enthusiasts, Rock Polisher for Kids and Adults - 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.vn/products/739608310-national-geographic-stone-rotating-drum-complete-media-kit-stone-polishing](https://www.desertcart.vn/products/739608310-national-geographic-stone-rotating-drum-complete-media-kit-stone-polishing) --- *Product available on Desertcart Vietnam* *Store origin: VN* *Last updated: 2026-05-23*