Lonsdaleite is a rare and fascinating mineral also known as hexagonal diamond. It was named after Kathleen Lonsdale, an Irish crystallographer who made significant contributions to the study of X-ray crystallography. While lonsdaleite is a relatively unknown mineral, there are several other names that it is also referred to, including hex-diamond, crystal carbon, and beta-diamond. In addition, lonsdaleite is often associated with other diamond-related terms such as diamonds and diamondoids, due to its similarity in composition and unique crystalline structure. Despite its rare occurrence, lonsdaleite remains an exciting topic of research for scientists looking to learn more about its properties and potential applications.