

✨ Polish Like a Pro, Shine Like No Other! ⚡
MJR Tumblers' 3-pound Extreme Polish features an exclusive 12,000 grit sub-micron aluminum oxide formula, delivering unparalleled ultra-fine polishing power that outperforms standard 1,200-1,500 grit competitors by 10x. Trusted by professionals and hobbyists alike, this premium powder is perfect for achieving flawless, high-gloss finishes on rocks and jewelry. Proudly crafted by a Disabled and Veteran owned company, it combines quality, performance, and social impact in one essential polishing solution.







| ASIN | B0D4PL4512 |
| Best Sellers Rank | #17,329 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #17 in Tumbling Media |
| Brand | MJR Tumblers |
| Brand Name | MJR Tumblers |
| Compatible Material | Aluminum Oxide |
| Customer Reviews | 4.6 out of 5 stars 442 Reviews |
| Grit Material | Extreme Aluminum Oxide |
| Grit Material Type | Extreme Aluminum Oxide |
| Grit Number | 12000 |
| Grit Type | Ultra Fine |
| Item Weight | 3 Pounds |
| Manufacturer | MJR Tumblers |
| Material | Aluminum Oxide |
| Material Type | Aluminum Oxide |
| Unit Count | 1.0 Count |
C**R
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.
T**E
BEST GRIT EVER!
GOOD STUFF! Much better than What National Geographic Sells.
A**O
Love it!
This polish made my rocks SUPER GLOSSY! Definitely recommend and I will be purchasing again.
T**R
Pleased
Was nice contributor to my holiday projects and was reasonably priced
P**J
grit
It is the same as I already have , did not make stones shiny
D**N
Perfection takes time.
Be patient tumble a long time and you will be amazed how shiny your rocks will be. Just remember that the finished piece is no better than the base underneath the final finish. Like a paint job on your car, if there are rough patches they’ll still be there at the end.
T**V
Works!
We got some rock tumblers around Christmas and they’ve been running since then. We could never get the polished shine we expected, some of these rocks have been final polished or burnished for weeks without getting them to shine. I decided to give this product a try. It arrived four days ago and I immediately started the problem rocks tumbling in it. I just checked today and they already have a beautiful shine when dry! The grit is pricey, but you cut can cut the cost in half by buying five pounds.
K**N
Amazing product very satisfied :)
Amazing. I was about to give up because my rocks were just not getting polished very smooth but not polished read the reviews for this product and decided to try it . I'm only on day 4 of polishing with the 12000 grit and my rocks already look amazing. Will 100% be buying again in the future!
Trustpilot
2 weeks ago
4 days ago