I'm not sure where I got this. If someone knows, please tell me!
Annoint 2 yellow candles with lemon oil, and light them. Take a citrine quartz crystal, and annoint with lemon oil also. Place it in front of the candles so that the light from the candles shines on it. Chant the following:
Charge this stone with candle light
Let the candles burn and charge the stone while you study. Carry the stone with you while giving speeches, taking tests, or studying.
To fill my mind with wisdom bright
To keep my mind alert and clear
So that no bane can interfere
With the process of my brain
So what I read is knowledge gained
For all my life to stay with me
This is my will, so mote it be!