I have resurfaced India, Arkansas, and Carborundum stones. I don't use them on aluminum, but some steels, particularly stainless, will load a stone no matter what.
While you CAN use a diamond plate to resurface stones, they are best used on the soft stones that are designed to break down during use- like waterstones. Harder stones can eat away the nickel plating that holds the diamonds in place, particularly if flattening is done aggressively.
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