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Natural Stone

Natural Stone can be divided into 3 overal categories: sedimentary, igneous or metamorphic.

Sedimentary Rocks - formed when rocks settle in water or when minerals are deposited by plants, animals or other chemical processes (examples are sandstone, limestone)

Igneous Rocks - are formed when molden rock cools (granite, basalt)

Metamorphic Rocks - rocks that have been squeezed and heated (not melted). Examples includ slate and quartzite.