Natural stone has inherent imperfections. Resin fills, reinforces, and strengthens the durability of natural stone, but can be problematic if not done properly.
Darkness from moisture in a poultice application can wick out beyond the original stained area. This is not a stain, and the problem is easy to resolve.
There are a number of reasons why countertop cloudiness or haze can develop. Here are the details about possible causes and solutions for the problem.
Stone countertops, continually exposed to oily or dye-containing substances, are subject to staining. Read this article to learn about countertop protection.