KRCY Stage 4 Final Rock Polish — 8000 Aluminum Oxide

KRCY Stage 4 Final Rock Polish is a professional-grade polishing compound formulated for the final polishing stage in rotary rock tumbling.

This final polish is designed to maximize surface shine, reflective clarity, and color depth after stones have completed coarse grinding, medium grinding, and pre-polishing stages. It helps produce smooth, glossy, mirror-like finishes on a wide variety of tumbling materials.

Proper Stage 4 polishing is essential for achieving professional-looking results because any remaining imperfections from earlier stages may still appear after polishing. Thorough cleaning before the polishing stage is highly recommended to avoid grit contamination and unwanted scratching.

The polishing compound provides stable polishing performance and consistent finishing results, helping users achieve cleaner, brighter, and more reflective stone surfaces.

Recommended tumbling cycle:

• 5–10 days in rotary tumbler
• Water level slightly below top of stones
• Fill barrel 2/3 to 3/4 full
• Clean thoroughly before polishing

Compatible with most rotary tumblers including:

• KRCY tumblers
• Lortone tumblers
• Thumler’s tumblers
• Tumble-Bee systems

Suitable for:

• Hobby rock tumbling
• STEM education
• Lapidary workshops
• Geological projects
• DIY gemstone polishing

Store in a dry environment after opening.