The stuff you put into the tumbler particularly to polish the rocks in the final phase is generally made of cerium oxide, tin oxide, chrome oxide, or aluminum oxide. This is a sort of grit customarily generally known as a polishing compound and is amazingly good. In this article and https://www.facebook.com/permalink.php?story_fbid=pfbid0ww438oyjEcTfX4xX6WCkQF5vy17yCx8goi3oH5YDkinKfFGxbWMtjjaD7YsNT2eKl&id=61562415773754&__cft__[0]=AZX-QAR_vhBkIQn-CHh-qVrVh-ymnljhRn7R-P73MC_nPlGeMjnnVcKfwAEvBSElWyReFDgdGfaBcSpcbzAjhXGt0VgSnonh2-Sn7EAslXaDomawwoS-fOBcpNsz1qhfPyulei1EyrV9fPp46vN--t13J6MfE305voku70pu4oXlBKLuIpeJRsbHFczk72IvZfA7Z3DWbF39VtWGhkRqIUI-&__tn__=%2CO%2CP-R