C5 Starter Rock Tumbler Kit – Dual Noise-Reduction, Complete STEM Rock Polishing Kit for Kids & Beginners + 4 lbs Polishing Grit & Ceramic Media – Essential 4-Step Refill Kit

C5 Starter Rock Tumbler Kit + 4 lbs Polishing Grit Set

• KoolStone C5 Series – Perfect for Beginners. Designed for first-time users, the C5 combines a beginner-friendly exterior with smart controls and a colorful, intuitive interface. Step-by-step guidance ensures a smooth, successful start. Includes a full-color polishing guide with tips, stage recommendations, and fun rock facts—making rock polishing easy, educational, and enjoyable from day one.
• Dual Noise-Reduction – Up to 85% Quieter Tumbling. The C5’s dual noise-reduction design—premium rubber barrel plus noise-reduction lid—cutting noise by up to 85% compared with standard plastic barrels. Smooth, soft, and quiet, perfect for shared spaces or nighttime use.
• The 1st Smart Tumbler for Beginners – True smart control in a simple, one-touch design. The 3-speed, 9-day polishing program removes guesswork, guiding beginners from start to finish. Pause/Resume feature lets you stop and continue anytime—smart, simple, and stress-free.
• Everything You Need to Create Polished Gemstones -- KoolStone Rock Tumbler has everything you need to create polished gemstones. Rock tumbler, rubber barrel, 0.5LB for 8 different types of rough gemstones, 2 belts and 4 polishing grits and ceramic contact media, sifter, jewelry fastenings, and illustrated tutorial guide. Just tumbling right away!