Know Your Stone

The natural stone countertop you have purchased for your home is an investment that will give you many years of beautiful service. Stone is a natural product and simple care and maintenance will keep it looking beautiful. Make sure you understand which methods are best for your particular stone countertop.

Natural stone is categorized into three basic geological classifications by their respective formation processes: sedimentary, metamorphic and igneous. Additionally, stones in each category can be either calcareous or siliceous.

The following chart may be a helpful guide:

Calcareous stone is composed mainly of calcium carbonate, a chemical compound commonly found in natural stone, shells, and pearls. Calcium carbonate is sensitive to acidic solutions so mild, non-acidic cleaners are recommended. Siliceous stone, as the term implies, is one composed primarily of silicates, such as quartz, feldspar, mica, etc. As such, a siliceous stone is generally resistant to most acids found in kitchen settings, although acidic cleaners are still not recommended, as these stones may contain trace levels of minerals that are acid sensitive.