Titanite is a rare mineral. Titanite’s diagnostic properties are its crystal habit, color, and luster. Its monoclinic crystals are often wedge-shaped or tabular-shaped. Its typical color range is yellow, green, brown, and black. Pink, orange, and red specimens are rare. Titanite is known for its high luster and dispersion rate. This results in transparent titanite crystals being brilliant, and opaque Titanite being highly reflective.