Question: “The granite around my sink (White Kashmir) is turning dark. We have applied sealer, but the stone is still turning dark. Please help!”
Answer: Looks like there is caulking missing in between the sink and the stone. The darkening is most likely water moisture. You will need to contact a Stone Restoration Professional to fix underneath the sink to make sure there is a secure seal. Once this is done and dried out, a good sealer will need to be applied to prevent staining from the top surface. The stone is absorbing water at this point which is what is turning the stone darker.
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