We tumble rocks too, and we wanted better grit.
Rockridge Grit is a US shop for rock tumbler media. We sell the grits, polishes, shot and spacers we rely on our experience in business since 2010. We sell refill kits for your brand of tumbler and we build specialized kits for more precise processing of the variety of rocks and objects you may be working with.
Results you'll be happy with when the barrel opens
The right amount
Bags are portioned for real barrel sizes. You use what's in the bag, and nothing gets wasted.
Clean, graded media
Consistent particle size from step to step, so each grit removes the marks of the last one.
Useful answers
Browse one of our instructions guides for detailed step by step explanations.
Our own kits
We develop our own grit kits. Seven of the eight in our Grit Kits range, from the Brilliant and Full Spectrum kits to our Thumler’s and Harbor Freight refills, are Rockridge recipes.
Three questions, then a kit
Your tumbler
Brand, model and barrel capacity. Rotary and vibratory machines need different amounts and run times.
Your material
Agate, jasper, obsidian, sea glass, brass or sterling. Hardness decides the grit sequence.
Your finish
Satin, high gloss or a burnished shine on metal. We portion each step and write instructions to match.
Start with the kit that fits your barrel
Shop single grits and kits, or send us your setup for a custom blend.