Yep, that's right, I put two barrels of rocks on my tumbler and didn't touch them for an entire year. The results were very interesting! This experiment really does a good job of showing the strengths and weaknesses of silicon carbide and aluminum oxide grit.

Here are close up pictures of the carnelians from this video: [ Ссылка ]
Close ups of the Bahias are here: [ Ссылка ]

Thanks to Christina Jelinek for doing the closed captions for this video. If you would like to help out with the closed captions, let me know.

– MERCH –
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– INSTAGRAM –
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– KINGSLEY NORTH –
Kingsley North is a lapidary store in Michigan's U.P. They make a great cab machine and sell many other brands too. They have a huge selection rough rock, tumblers, grit, jewelry supplies etc. at good prices. I buy most of my coarse grit from here in 45 lb. bags. It's the best price I have found. If you buy using the following link, I make a small commission.
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This is the cabbing machine I use:
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– THE ROCK SHED –
I buy a lot of lapidary supplies from The Rock Shed. I don't make money from your purchases there, but they have good prices and good service. This is where I buy my finer grits and polish.
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– AMAZON STOREFRONT –
I also have an Amazon storefront. This is where you can find other products you may have seen in my videos. As an Amazon Associate I earn from qualifying purchases. It doesn't cost you extra.
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On Michigan Rocks you can join me on relaxing rock hunts in picturesque Michigan. I'll also show you how to polish rocks and teach you other lapidary techniques. New videos are posted every Friday and some Tuesdays. Subscribe now so you don't miss any upcoming videos!
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