3.7 in (95 mm). A burst of stunning yellow, halloysite included quartz, also known as mango or corona quartz, is a crystal of renewal, inspiration & empowerment. It clears stagnant energy & blockages, allowing yourself to break any limiting cycles that are holding you back. Releasing these old patterns frees your mental energy & creates enthusiasm for new dreams & goals. Please note that crystals & stones are natural items that may have small flaws or imperfections. Please message us with any questions. This item is made of quartz and halloysite.