http://www.cooksongold.com/Jewellery...rcode-999-6012

The description says:This 450gm pack of 80 Grade Silicon Carbide Grit is most commonly used as the first grinding stage of tumble polishing.

Great! But, do you use it on it's own or do you use it with ceramic cones or stainless steel shot?

Is it reusable? I imagine it is at that price.

Advice is greatly appreciated. Thanks.