Hi SRP Expert Honers,

I recently purchased a new DMT D8C 8-Inch Dia-Sharp Continuous Diamond Coarse which showed up with a discoloration in the center of one side. This has not rinsed off with water or rubbed off using my fingers.

Just wondering if I should exchange it before trying to use it for lapping as I know sometimes these stones show up with "bare" areas.

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Edit: updated title since I posted too quickly and forgot to finish it