--- product_id: 689991271 title: "MJR Tumblers 12,000 Grit Aluminum Oxide Rock Polish Powder, 5lb Extreme Fine Final Stage Rock Tumbler Polish, Stone Polishing Compound for Rotary & Vibratory Tumblers, Lapidary Finish" brand: "mjr tumblers" price: "$173.25" currency: USD in_stock: true reviews_count: 13 category: "Mjr Tumblers" url: https://www.desertcart.us/products/689991271-mjr-tumblers-12-000-grit-aluminum-oxide-rock-polish-powder store_origin: US region: United States of America --- # Works with rotary & vibratory tumblers 12,000 ultra-fine grit for flawless polish Premium aluminum oxide for consistent finish MJR Tumblers 12,000 Grit Aluminum Oxide Rock Polish Powder, 5lb Extreme Fine Final Stage Rock Tumbler Polish, Stone Polishing Compound for Rotary & Vibratory Tumblers, Lapidary Finish **Brand:** mjr tumblers **Price:** $173.25 **Availability:** ✅ In Stock ## Summary > ✨ Polish like a pro, shine like a legend! ✨ ## Quick Answers - **What is this?** MJR Tumblers 12,000 Grit Aluminum Oxide Rock Polish Powder, 5lb Extreme Fine Final Stage Rock Tumbler Polish, Stone Polishing Compound for Rotary & Vibratory Tumblers, Lapidary Finish by mjr tumblers - **How much does it cost?** $173.25 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/689991271-mjr-tumblers-12-000-grit-aluminum-oxide-rock-polish-powder) ## 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 - • **Reliable Consistency:** Premium aluminum oxide ensures even, repeatable results every cycle - • **Final Stage Perfection:** Achieve mirror-like shine with ultra-fine 12,000 grit polish - • **Multi-Material Mastery:** Perfect for polishing rocks, minerals, and glass to crystal-clear smoothness - • **Versatile Compatibility:** Seamlessly works with both rotary and vibratory tumblers for flexible workflows - • **Trusted American Quality:** Proudly USA owned, veteran-run brand delivering dependable performance ## Overview MJR Tumblers 12,000 Grit Aluminum Oxide Polish Powder is an ultra-fine, premium-grade polishing compound designed for the final stage of rock tumbling. Compatible with rotary and vibratory tumblers, it delivers consistent, mirror-quality finishes on stones, minerals, and glass. This 5lb pack from a trusted USA veteran-owned brand ensures your lapidary projects stand out with professional-grade clarity and shine. ## Description Product description Review: Tons of abrasive, leaves a great finish - Some mild yellow discoloration, but quality seems to still be there. Tons of abrasive for the price, and it works great as a suspension. No clumping or galling from it not dispersing in use. Particle size does appear to be correct for the 14000 grit I purchased. Review: This will get you to shiny! - I got a Lortone dual tumbler for Christmas and a kit of grit to go with it. I wasn’t getting the shine I wanted with the level 4 grit that came with the kit so I looked at reviews for a final stage grit and this one came up. I am not disappointed! This did the trick! I don’t want super shiny, just a shine but this grit can do both, all about the timing. Excellent product, totally recommend! ## Features - ULTRA-FINE 12,000 GRIT FOR FINAL POLISHING STAGE: This sub-micron 12,000 grit aluminum oxide is designed for the final stage of rock tumbling, helping refine stone surfaces after pre-polish. Ideal for achieving a smooth, clean, and polished finish on rocks, minerals, and gemstones. - HIGH QUALITY ALUMINUM OXIDE FOR CONSISTENT RESULTS: Made from premium aluminum oxide, this polishing compound delivers even, reliable performance across tumbling cycles. Designed to support consistent finishing results when used as part of a complete multi-stage polishing process - COMPATIBLE WITH ROTARY & VIBRATORY TUMBLERS: Suitable for use with most rock tumblers, including rotary and vibratory machines. A versatile polishing solution for maintaining your rock tumbling workflow or upgrading your final polishing stage. - IDEAL FOR ROCKS, MINERALS & GLASS POLISHING: Works well across a variety of materials, including stones, minerals, and glass. Designed to enhance surface smoothness and clarity during the final polishing step. - USA OWNED BRAND WITH TRUSTED QUALITY: Offered by a USA-based, disabled and veteran-owned company. MJR Tumblers provides dependable rock tumbling supplies designed for performance, consistency, and ease of use. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0D4PGY21Q | | Best Sellers Rank | #27,189 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #42 in Tumbling Media | | Brand | MJR Tumblers | | Brand Name | MJR Tumblers | | Compatible Material | Aluminum Oxide | | Customer Reviews | 4.6 out of 5 stars 134 Reviews | | Grit Material | Extreme Aluminum Oxide | | Grit Material Type | Extreme Aluminum Oxide | | Grit Number | 12000 | | Grit Type | Extreme Polish | | Item Weight | 5 Pounds | | Manufacturer | MJR Tumblers | | Material | Extreme Aluminum Oxide | | Material Type | Extreme Aluminum Oxide | | Number of Items | 5 | | Part Number | MJR-12000-5LB | | Set Name | MJR Tumblers Extreme Polish Set | | Unit Count | 1.0 Count | ## Product Details - **Brand:** MJR Tumblers - **Grit Material:** Extreme Aluminum Oxide - **Grit Type:** Extreme Polish - **Item Weight:** 5 Pounds - **Material:** Extreme Aluminum Oxide ## Images ![MJR Tumblers 12,000 Grit Aluminum Oxide Rock Polish Powder, 5lb 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 ### ⭐⭐⭐⭐⭐ Tons of abrasive, leaves a great finish *by N***O on April 19, 2026* Some mild yellow discoloration, but quality seems to still be there. Tons of abrasive for the price, and it works great as a suspension. No clumping or galling from it not dispersing in use. Particle size does appear to be correct for the 14000 grit I purchased. ### ⭐⭐⭐⭐⭐ This will get you to shiny! *by E***N on April 19, 2026* I got a Lortone dual tumbler for Christmas and a kit of grit to go with it. I wasn’t getting the shine I wanted with the level 4 grit that came with the kit so I looked at reviews for a final stage grit and this one came up. I am not disappointed! This did the trick! I don’t want super shiny, just a shine but this grit can do both, all about the timing. Excellent product, totally recommend! ### ⭐⭐⭐⭐⭐ Great finishing polish *by R***B on May 11, 2026* I will be buying it again --- ## 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/689991271-mjr-tumblers-12-000-grit-aluminum-oxide-rock-polish-powder](https://www.desertcart.us/products/689991271-mjr-tumblers-12-000-grit-aluminum-oxide-rock-polish-powder) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-07-24*