Rose quartz has been used in love rituals and ceremonies for centuries, and remains the stone of the hopeless romantic. A member of the quartz family, this crystal is made up of silicon dioxide. It’s sweet, soft pink hue is the result of both the many, tiny inclusions of pink fibers, known as dididumortierite, within the glassy stone that keep it from being totally transparent, and irradiation. This irradiation is also why rose quartz should be kept out of the sun, so as to not loose its pretty shade. With a hexagonal crystal structure, this stone typically forms into large specimen, but occasionally develops smaller, prismatic clusters as well.