Clear Quartz Tumbled StoneClear quartz, The Master Healer. Clear quartz amplifies energy and strengthens the effects of other crystals. It purifies energy and aids in manifestation. It also clears and activates all your chakras. This crystals healing power improves focus and mental clarity, making it a great stone for meditation and for academic success. It is a suitable crystal for beginners. It reveals the truth of a situation, and provides better understanding of yourself