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Yes, limestone often turns yellow over time when improperly cared for. The stone contains natural iron deposits, which can oxidize when exposed to water, acids, or harsh chemicals, such as bleach. Without exposure to water or chemicals, limestone should not turn yellow. Always seal limestone countertops to protect them from moisture, and only use gentle cleansers designed for stone.

Use a pH-balanced cleaner, avoid abrasive materials, and reseal porous stones like granite annually to maintain durability.

Unfortunately, the product Bar Keepers Friend won’t remove etching from stone countertops. In fact, it can make it worse. Bar Keepers Friend contains oxalic acid, which can cause further damage to natural stones like marble or limestone.

White quartz is a very low-maintenance countertop material. It’s nonporous, so it won’t stain, even if you spill dark liquids on it. The light color will make dirt show up much easier, but a simple wipe-down will keep the countertops looking fresh and bright for years to come. However, it might not be the best kitchen countertop idea on a budget because it's expensive.