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Hindostans only come from Indiana.

OP, can you give us some shots of the end of the stone with good lighting? And you can easily test for approximate fineness very quick and easy with a chisel if...

Looks like a line down the middle on the side - is it a combo stone or just a dirt line from the box? Might be a Carborundum. Have you ever tried it on a razor? What sort of result? Fine finish? Fast...