You might try your local rock hound shop or this link.
http://therockshed.com/grit.html
They have all sorts and sizes of silicone carbide grit used for polishing rocks.
You might try your local rock hound shop or this link.
http://therockshed.com/grit.html
They have all sorts and sizes of silicone carbide grit used for polishing rocks.
Shaky;
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