The Hope Diamond is a famous blue diamond weighing 45.52 carats. It is known for its rare color, which is attributed to the presence of boron in its structure. The diamond has a long history, believed to have originated in India, and has changed hands multiple times over the centuries. Currently, the Hope Diamond is housed in the Smithsonian Institution in Washington, D.C. It is part of the National Gem Collection and attracts millions of visitors each year. The diamond is also associated with various legends and myths, including claims of a curse affecting its owners.