About 5 cm
Star rose quartz is an exotic rose quartz found in Madagascar. It has tiny fibers of dumortierite which creates asterism, or 6-ray star, effect on the surface of the stone. It's easiest to see in bright light and on a rounded surface. It is often very translucent and gemmy and can range from pale pink to lavender to an incredible magenta color. Rose Quartz is the stone of universal love and I tend to find that star rose quartz is extra potent!