7.4" Tall, Polished Rose Quartz Flame - Madagascar
Rose quartz is evenly colored with masses ranging from pink to almost purple. The exact cause of the color was debated for years. Originally it was assumed to either be due to rutile inclusions of Titanium Dioxide within the quartz masses, or irradiated "color centers" as is the case with amethyst or smoky quartz.
An x-ray diffraction study in 1987 showed that it was due to neither of these but due to the inclusion of microscopic fibers which were thought to be the mineral dumortierite. Even more recent analysis using other techniques have shown the microscopic fibers are an unidentified or unnamed mineral that is closely related related to dumortierite. These fibers make up up only about 0.05% - 0.15% of the overall weight of rose quartz.