--- product_id: 690541058 title: "12,000 Grit Aluminum Oxide Rock Polish Powder, 3lb Extreme Fine Final Stage Rock Tumbler Polish, Stone Polishing Compound for Rotary & Vibratory Tumblers, Lapidary Finish" brand: "mjr tumblers" price: "$131.92" currency: USD in_stock: true reviews_count: 13 category: "Mjr Tumblers" url: https://www.desertcart.us/products/690541058-12-000-grit-aluminum-oxide-rock-polish-powder-3lb-extreme store_origin: US region: United States of America --- # 12,000 grit ultra-fine polish 3 lbs premium aluminum oxide powder Veteran & Disabled Owned Quality 12,000 Grit Aluminum Oxide Rock Polish Powder, 3lb Extreme Fine Final Stage Rock Tumbler Polish, Stone Polishing Compound for Rotary & Vibratory Tumblers, Lapidary Finish **Brand:** mjr tumblers **Price:** $131.92 **Availability:** ✅ In Stock ## Summary > ✨ Polish Like a Pro, Shine Like a Legend 🎖️ ## Quick Answers - **What is this?** 12,000 Grit Aluminum Oxide Rock Polish Powder, 3lb Extreme Fine Final Stage Rock Tumbler Polish, Stone Polishing Compound for Rotary & Vibratory Tumblers, Lapidary Finish by mjr tumblers - **How much does it cost?** $131.92 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/690541058-12-000-grit-aluminum-oxide-rock-polish-powder-3lb-extreme) ## Best For - mjr tumblers enthusiasts ## Why This Product - Trusted mjr tumblers brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Bulk 3-Pound Supply:** Ample quantity with smart ziplock packaging for freshness and easy storage. - • **Pro-Grade Performance:** Trusted by rock hounders and professionals for flawless burnishing results. - • **Veteran-Owned Excellence:** Support a Disabled and Veteran Owned company committed to quality. - • **Unmatched Ultra-Fine Polish:** Experience 10x finer grit than competitors for mirror-like finishes. - • **Exclusive 12,000 Grit Formula:** Industry-leading sub-micron aluminum oxide for unparalleled rock polishing. ## Overview MJR Tumblers offers a premium 3-pound pack of 12,000 grit sub-micron aluminum oxide polishing powder, delivering ultra-fine, professional-grade results that outperform standard 1,200-1,500 grit competitors by 10x. Packaged for convenience and freshness, this product is crafted by a Disabled and Veteran Owned company, making it the top choice for serious rock polishers and hobbyists seeking flawless, mirror-quality finishes. ## Description 3 Pounds of MJR Tumblers Premium Quality Extreme Polish 12,000 Grit Sub Micron Aluminum Oxide Rock Polishing Powder. for Unparalleled Quality and Performance. A Disabled and Veteran Owned Company!: desertcart.com: Industrial & Scientific Review: Great Product Line and Attention to Detail - I recently placed an order for 4lbs of step 3 pre-polish aluminum oxide from MJR Tumblers, and was pleasantly surprised that each lb was separated into 4 heavy duty ziplock bags. This allows me to store just wants needed in my storage ben, while keeping my extra product in the semi air tight bag which it was shipped in. I was also impressed with there product line, I struggled to find 400 to 600 grit in the aluminum oxide on desertcart, but I am happy MJR Tumblers turned out to be the only one I could find, because i plan on making more orders with this company😊 they also sent some great literature along with my order, including knowledge of there FB page I can join and share my passion with other Rock Hounders🥰 Thank you for this service AND a Special Thanks for your Service 🫡100% satisfied customer!!! Review: Great company - The best polish. Don't trust the kits on here, you need 8000 and above in final stage to get a good polish. This works really well. Always burnish afterwards to complete the stones. ## Features - There is No comparison in the results between MJR Tumbler's Exclusive 12,000 grit Sub Micron Extreme Aluminum Oxide Polish and our competitors 1,200 grit or 1,500 grit Aluminum Oxide. 12,000 grit is ten times finer than 1,200 grit with ten times better results! - MJR Tumbler’s Exclusive 12,000 Grit Sub Micron Extreme Aluminum Oxide Polish is the best polish you can buy! - No other polish even comes close to our results. - If you want the best, MJR Tumblers 12,000 Grit Sub Micron Aluminum Oxide Extreme Polish is what you need! - MJR Tumblers is a Disabled and Veteran Owned Company! ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0D4PL4512 | | Best Sellers Rank | #12,066 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #18 in Tumbling Media | | Brand Name | MJR Tumblers | | Compatible Material | Aluminum Oxide | | Customer Reviews | 4.5 4.5 out of 5 stars (469) | | Grit Material Type | Extreme Aluminum Oxide | | Grit Number | 12000 | | Grit Type | Ultra Fine | | Item Weight | 3 Pounds | | Manufacturer | MJR Tumblers | | Material Type | Aluminum Oxide | | Unit Count | 1.0 Count | ## Product Details - **Brand:** MJR Tumblers - **Grit Material:** Extreme Aluminum Oxide - **Grit Type:** Ultra Fine - **Item Weight:** 3 Pounds - **Material:** Aluminum Oxide ## Images ![12,000 Grit Aluminum Oxide Rock Polish Powder, 3lb Extreme Fine Final Stage Rock Tumbler Polish, Stone Polishing Compound for Rotary & Vibratory Tumblers, Lapidary Finish - Image 1](https://m.media-amazon.com/images/I/61nvojo7R0L.jpg) ## Available Options This product comes in different **Size, Style** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Great Product Line and Attention to Detail *by J***K on March 13, 2026* I recently placed an order for 4lbs of step 3 pre-polish aluminum oxide from MJR Tumblers, and was pleasantly surprised that each lb was separated into 4 heavy duty ziplock bags. This allows me to store just wants needed in my storage ben, while keeping my extra product in the semi air tight bag which it was shipped in. I was also impressed with there product line, I struggled to find 400 to 600 grit in the aluminum oxide on Amazon, but I am happy MJR Tumblers turned out to be the only one I could find, because i plan on making more orders with this company😊 they also sent some great literature along with my order, including knowledge of there FB page I can join and share my passion with other Rock Hounders🥰 Thank you for this service AND a Special Thanks for your Service 🫡100% satisfied customer!!! ### ⭐⭐⭐⭐⭐ Great company *by C***R on October 1, 2025* The best polish. Don't trust the kits on here, you need 8000 and above in final stage to get a good polish. This works really well. Always burnish afterwards to complete the stones. ### ⭐⭐⭐⭐⭐ Extra fine grit *by B***E on February 23, 2026* This is the extra fine grit you need for stage 4 or even stage 5 to provide extra polish to your tumbled media. It provide a great shine. ## Frequently Bought Together - MJR Tumblers 3 LB per Polish Sub Micron Aluminum Oxide 12,000 Extreme Polish Rock Grit Stage 4 | USA - MJR Tumblers 4 LB Pre-Polish Aluminum Oxide 400/600 Rock Grit Stage 3 | USA - 8 lbs Tumbler Media Grit,Polish 1500 Fine Aluminum Oxide, Step 4 for Tumbling Stones,Rock Polishing Grit Media, Works with Any Rock Tumbler --- ## 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.us/products/690541058-12-000-grit-aluminum-oxide-rock-polish-powder-3lb-extreme](https://www.desertcart.us/products/690541058-12-000-grit-aluminum-oxide-rock-polish-powder-3lb-extreme) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-07-23*