What is the most interesting, they are not charged, they become the activated and permanent source of this energy. Price is usually few times higher then the price of not activated crystal of same size. Traditionally, reading stones and spheres were never exposed to sunlight because this was thought to hinder their ability to connect and communicate with the psychic mind, and in turn, the divine. Scrying is best when done at night because traditionally night rules the psychic mind. Find a quiet spot, sit comfortably, and place the crystal on a stand, table or hold it in your hands.
Candles are conducive to crystal reading.
If you find yourself distracted by the reflections and movements of the flame, then experiment by using other light sources, or try moving the candle until you find what works for you. Now relax by breathing deeply for a few moments with your eyes closed. Upon opening your eyes, hold the crystal in your hands until it is warm. Many psychics say this is important because this step connects your energy to that of the stone. Heating the stone also activates it.