Partners - I worked on a granite countertop today that was a bit hazy looking but was unable to get it to shine like other granite slabs in the same kitchen. No scratching or obvious scuff marks - just a dull appearance. (only one of 4 slabs had an issue - and is also not the exact color as the rest). The haziness is present (but uneven) on the entire slab and ends right on the seam where it butts up to another slab, so my guess is, this is an issue going back prior to installation.

I thought there might be a messy sealant or coating on it, so I tried stripping it with a water-based stripper with some agitation with steel wool with no affect. I tried polishing the slab wet-to-dry with MB-20 which also didn't seem to change much. I ended up applying a wax, which helped a bit, but it is far from being “new” looking.

Any suggestions? Would it be necessary to hone this down first?

This is the problem slab (you can see the color change on the left at the seam):

This is one of the other slabs: