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For most homeowners, quartz and quartzite countertops are similar in price. The average quartz countertop installation costs $80 to $220 per square foot, while quartz countertops cost $70 to $200 per square foot. Of course, there are outliers, like if you choose a highly customized, rare natural stone with high-end finishes.

The frequency for sealing granite countertops depends on several factors, including the type of sealant used, the color of the granite, and how heavily the countertops are used. As a general guideline, resealing is often recommended every 12 to 18 months, but some sources suggest it could be as often as every few months or at least once a year.

The type of sealant is a major factor: water-based sealants may need reapplication every six months to a year, while more durable solvent-based sealants can last for five to 10 years. Additionally, factors like heavy kitchen traffic, frequent use of acidic cleaners, and lighter granite colors may require more frequent sealing to prevent staining.

To determine if your countertops need resealing, you can perform a simple water test. Place a few drops of water or a wet paper towel on an inconspicuous area of the granite. After 10 to 15 minutes, check the spot. If the water has beaded up, the seal is still intact. If the water has been absorbed and darkened the stone, it's time to apply a new coat of sealant. You can choose to seal the granite yourself or hire a professional to ensure it's done correctly.

Baking soda can damage some countertops, but it makes an excellent mild abrasive for removing stains on other countertops. For example, never use baking soda on quartz or glass countertops, but you can use it on laminate and tile. Stay away from using it on quartz because it can scratch and damage the counter, and glass is prone to scratches. Since baking soda is a mild abrasive, you can only use it on certain surfaces.

It’s generally safe to use a Magic Eraser on quartz countertops. Magic Erasers are made from melamine foam, a gentle abrasive that can remove scratches and stains from various surfaces. Although using abrasive cleaners on quartz is not recommended, the melamine foam is gentle enough to remove minor stains and scratches without permanently damaging the quartz countertops.