A number of polishing compounds have been successfully used in rock tumbling. These include oxides of aluminum, tin, cerium, chromium and others.
Cerium Oxide for Stone Tumbling [200g] – LAPIDARY GRADE – RockTumble
Which Rock Tumbler Polish? Aluminum, Tin, Cerium, Chrome Oxide
Cerium Oxide #1 - Covington Corporation
Tumblers, Grit and Rough Great Basin Gem and Mineral Club
Modern Rock Tumbling PDF PDF, PDF, Materials
What Is The Best Polishing Compound For Rocks? Polishing compound, How to polish rocks, Rock tumbling
Rocks won't shine : r/RockTumbling
Rock Tumbling Basics - Comparing 3 Final Polishes
Fundamental Rockhound Products: Standard Tumble Polish for Rocks and Glass, Aluminum Oxide (1 lb) : Toys & Games
Lapidary Materials for sale
Fundamental Rockhound Products: Standard Tumble Polish for Rocks and Glass, Aluminum Oxide (1 lb)
Aluminum Oxide Polish: 5lbs : Health & Household
Lapidary Polish 1 oz French Cerium Oxide 99+% Pure - Free Shipping Included
Fast acting scratch remover
Cerium Oxide High Grade Glass Polishing Compound - 1 lb (Pack of 1)