Sphene is a mineral composed of calcium, titanium, and oxygen that is characterized by its brilliant luster and multicolored appearance. It is also known by other names, including titanite, calmanite, and strandite. These synonyms refer to variations in chemical composition or geographic location where the mineral is found. Titanite is commonly used in scientific literature and is preferred by some mineral collectors, while calmanite and strandite are rare variants of the mineral found in specific locations. Regardless of the name used, sphene and its synonyms are highly valued for their aesthetic and scientific properties, making them a popular choice for collectors and researchers alike.