Quartz is the stone of the mind. Quartz is believed to assist in mental focus, inspiration and creativity. Quartz assists one in their spirituality and self-awareness. Quartz is the go-to to help cleanse the mind and help those groggy blues.
Be aware with the cleansing property that Quartz has, it will need to be recharged more often than other stones. Look for Selenite or Salt boxing to assist in stone cleansing.
Due to this being a natural stone, imperfections may be present and it cannot be guaranteed of the color properties occurring.
Photos show for size comparison.