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Like most stones, limestone should be sealed. Its porous nature makes it prone to staining from spills, and the iron in the stone can cause it to turn yellow when exposed to moisture or harsh chemicals. Proper sealing can help prevent these problems and protect the stone's appearance.

To remove cloudiness from marble, use equal parts baking soda and water to form a paste. Apply it to the surface, allow it to sit for at least two hours, then wipe with a microfiber cloth. Another option is adding a couple of dish soap drops to warm water and wiping the surface after you’ve applied it to the surface. You may also consider using a liquid stone cleaner.

Using water when cutting stone drastically reduces the amount of dust that comes off the stone. It’s beneficial to cut down on the amount of dust for respiratory and other safety reasons, such as keeping your vision clear while using an electric tool. Even with protective eyewear, the dust can still cloud your safety glasses. You should always wear protective gear when cutting stone.

You generally cannot change the color of the natural stone, such as making granite countertops darker or lighter. Some people claim that certain chemicals will lighten or darken granite, but those will damage the stone and not provide uniform, expected results, so it’s better not to try. Similarly, some people ask whether they can stain over granite. Granite is beloved for its stain-resistant finish, so you probably won’t get the best outcome if you try to stain over granite to make it darker.

Instead, consider honing, painting, or applying another material over the top of the granite to make it appear darker.