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KoolStone 12000 Grit Rock Tumbler Polish – Ultra-Fine Aluminum Oxide Final Polish
Take your rock and gemstone polishing to the next level with KoolStone 12000 Grit Sub-Micron Aluminum Oxide Polishing Powder. Designed as a final-stage Step 5 polish, this ultra-fine compound helps refine microscopic surface imperfections left behind by standard polishing stages to create a smooth, reflective, mirror-like finish.
Ideal for rocks, gemstones, glass, and other suitable polishing materials, this 12000-grit aluminum oxide powder works with both rotary and vibratory rock tumblers.
Key Features
Ultra-Fine 12000 Grit: Sub-micron aluminum oxide powder designed for fine finishing and final-stage polishing.
Step 5 Final Polish: Recommended for use after standard 800–1500 grit polishing to enhance the final surface.
Mirror-Like Finish: Helps reduce microscopic scratches and improve surface smoothness, clarity, and reflective shine.
High-Gloss Results: Designed to take already-polished stones beyond a standard bright finish toward a deeper, glass-like appearance.
For Rocks, Gems & Glass: Suitable for final polishing of compatible rocks, gemstones, glass, and similar materials.
Rotary & Vibratory Compatible: Designed to work with major rotary and vibrating rock tumbler systems.
Beginner & Experienced Friendly: Easy to incorporate into an established polishing process while offering advanced finishing performance.
1 LB Package: Convenient quantity for repeated finishing-stage polishing projects.
Designed for the Final Polishing Stage
KoolStone 12000 grit is intended to be used after coarser polishing compounds. While standard 800–1500 grit polish can produce a strong shine, this ultra-fine finishing compound is designed to refine the surface further.
It helps smooth microscopic imperfections and enhance the clarity, smoothness, and reflective quality of properly prepared stones.
Deep, Reflective Gloss
For rock tumblers looking for more than a basic shine, the 12000-grit finishing stage can help bring out a deep, smooth, glass-like gloss.
It is especially useful for creating polished specimens suitable for:
Rock collections
Gemstone displays
Lapidary projects
Decorative stones
Glass polishing
Hobby specimens
Recommended Usage
For best results, use KoolStone 12000 grit as the final polishing step after completing the appropriate previous polishing stages.
General guideline:
Thoroughly clean the tumbler and stones after the previous polishing stage.
Add approximately 2 scoops of 12000-grit polishing powder.
Add enough water to cover the stones.
Tumble for approximately 3–5 days.
Check the slurry periodically and add water as needed.
For larger or harder stones, the tumbling time may be extended slightly.
If appropriate for the load, use approximately 3 scoops for larger or harder stones.
Always adjust the process according to your specific tumbler, stone type, load size, and previous polishing results.
Compatible with Rotary & Vibratory Tumblers
This finishing powder is designed for use with both:
Rotary rock tumblers
Vibratory rock tumblers
For best results, make sure the tumbler is clean and properly prepared before beginning the final polishing stage. Avoid cross-contamination from coarser grit or polishing compounds.
Product Specifications
Brand: KoolStone
Product Type: Rock Tumbler Polishing Powder
Grit: 12,000 Grit
Stage: Final Polish / Step 5
Material: Sub-Micron Aluminum Oxide
Weight: 1 LB
Application: Rocks, Gems, Glass & Compatible Materials
Tumbler Compatibility: Rotary & Vibratory Tumblers
Finish: High Gloss / Mirror-Like Polish
Package Includes
Best Performance Tips
For optimal results, begin the final polishing stage with thoroughly cleaned stones and equipment. Properly completing each preceding polishing stage is important because an ultra-fine polish is intended to refine an already well-prepared surface rather than replace earlier grinding or polishing steps.
Results can vary depending on the type, hardness, shape, and condition of the material being polished, as well as tumbler type and operating conditions.
Why Choose KoolStone 12000 Grit Polish?
The KoolStone 12000 Grit Aluminum Oxide Polish is designed for rock tumblers who want to maximize the final appearance of their polished stones. Its ultra-fine particle size provides a dedicated finishing stage for enhancing smoothness and reflective shine after conventional polishing.
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