Emery is a type of mineral known for its hardness and durability. It is primarily composed of corundum, which is a crystalline form of aluminum oxide. Emery is often used as an abrasive material in various applications, including sanding and polishing surfaces. Its natural occurrence is typically found in metamorphic rocks. In addition to its industrial uses, emery is also associated with the production of emery boards, which are commonly used for filing nails. The mineral's rough texture makes it effective for smoothing and shaping, making it a popular choice in beauty and grooming products.