Normal spinel is a type of mineral that belongs to the spinel group. This mineral is known for its brilliant colors and excellent hardness, making it a popular choice for jewelry and other decorative uses. Some other synonyms for normal spinel include magnesium aluminum oxide, spinel group minerals, and gahnite. The color of normal spinel can vary depending on the presence of impurities and other factors, but it is typically found in shades of red, blue, green, and black. This versatile mineral has been used for centuries in various applications, and its popularity is likely to continue for many years to come.