Om is a sacred sound that is known generally as the sound of the universe and symbolizes the Universe and the ultimate reality.
Clear Quartz is a master healer stone, provides protection, cleansing and purification, clarifying thoughts and beliefs, balancing mind, body and spirit. The om symbol is a mirror of the mind’s journey. The curves of the om symbolize the different states of mind. 
•The curve at the bottom represents “Jagratha,” or the waking state. 
•The one in the middle is associated with “Swapna,” the dream state. 
•”Sushupti,” or deep sleep, is the top curve
•the semi-circle on top represents “Maya,”  which is basically an illusion or obstacle that keeps us from reaching “Turiya,” or transcendence. (That’s the dot on the top.)