QUESTIONI just had black galaxy granite installed and am wondering if it's been doctored. The reason is that a repair guy had to come out to polish the seam (which was full of chips on the edge) and when he polished it the area is very noticeably gray and not black anymore. Then he mentioned that it's impossible to polish it to match the color properly since the black granites are all dyed at the time they are created. Could I have gotten a dyed low quality black galaxy slab? I tried the lemon test, but not sure exactly what I'm looking for. When it says look for "black spots" what does that mean? Does that mean when you look through the lemon drop if there are spots that look blacker when wet? Because I do see that and I even see it when wiping the countertop with water. You can see noticeable black patches where I wiped but they dry up quickly and then it returns to normal. Any advice would be greatly appreciated!
ANSWERANSWER - Many granite slabs are treated with resin color enhancers to make the granite slab look better.
If the granite slab's polished surface was adjusted then the fabricator should have repaired it so it matched the rest of the counter top. That will require him to use an enhancer too. This is difficult for the fabricator because they might not know what the stone processor used originally.
Using an enhancer of some slabs of stone doesn't necessarily make them low quality. Today it is more common to see this practice.
The fact that the granite slab gets dark when subjected to water suggests that it absorbs moisture, indicating that it has some degree of porosity. There are stones that are sold as granite, but they are not true granite. These are considered commercial granite and they can be sold as granite.
The lemon test is normally done to verify how resistant the stone is to acid etching. If it leaves a mark that you can't remove then it is acid sensitive. Granite stones should not be acid sensitive.