Honed absolute black granite stains
We've lived in our kitchen for about a year and the honed absolute granite has begun to "stain," for lack of a better description. I think they are mostly water marks. There are several glass rings, a circle from a cooking pot, etc. I have tried hot water and the Method Daily Granite cleaning spray, which is what we typically use to clean the counters. Nothing gets the marks out.
Does anyone have any cleaning suggestions? Ay other information on why this is happening would also be helpful. I'm confused as to why this is just happening now. For the first 6 months or so the counters were easy to clean. Thanks!