Clear Quartz is known as the "master healer" and will amplify energy and thought, as well as the effect of other crystals. ... Clear Quartz enhances psychic abilities. It aids concentration and unlocks memory. Stimulates the immune system and brings the body into balance. 
Quartz enhances spiritual growth, spirituality, awareness, and wisdom. It increases inspiration and creativity. It can also help with concentration, studying, and retaining what one learns. Quartz is a stone of harmony and is helpful in romantic relationships.