Grit matched to your tumbler and to what's inside it.
We sell silicon carbide, aluminum oxide polish, stainless steel shot and spacers to tumbler owners across the USA. Tell us your tumbler and your rocks. We'll send a kit sized for your barrel, with instructions for every step.
Everything that goes in the barrel
Silicon Carbide
60/90 coarse to 500 pre-polish. Shapes rough rock and smooths it out.
Polish
Aluminum oxide for the final step. Brings out the shine on agate, jasper and quartz.
Stainless Steel Shot
Burnishes jewelry, brass and silver. It doesn't rust and lasts for years.
Accessories
Ceramic and plastic spacers to fill the barrel and cushion soft or small stones.
A kit built for your exact setup
A 3 lb rotary barrel and a vibratory bowl need different amounts. Soft obsidian and hard agate need different schedules. We portion and blend each kit to fit.
Your tumbler brand, model and barrel size
What you're tumbling: rock, glass, metal or jewelry
The finish you want, from satin to high gloss
Fewer scratches, fewer reruns
Measured by barrel
Each bag is portioned for a real barrel size, so you aren't guessing with tablespoons.
Tightly graded grit
Consistent particle size means a stray coarse grain won't scratch a stone in step three.
Instructions included
Every order ships with step-by-step directions for your tumbler and your rocks.
Opening the barrel on polish day
Four weeks of grit, rinse and patience come down to one moment. We want that moment to be glossy stones with no haze, no pits and no surprises.
Not sure which grit to start with?
Send us your tumbler model and a few words about your rocks. We'll reply with a recommendation.