Here are some stones and crystals to use for aid in clairvoyance or to increase psychic awareness:
Amethyst- A purple quartz crystal which is a great spiritual and meditation stone- sharpens the sixth sense
Aquamarine- A pale blue green color stone associated with sea goddesses of the past empowers the psychic mind by calming the conscious mind’s hold
Azurite- A deep blue stone that increases psychism by holding or wearing it- also can aid in clairvoyant dreams by placing under the pillow
Beryl- Called the stone of the seer, spheres of beryl used for scrying
Citrine- Yellowish and light orange quartz crystal aids in communication blocks of the mind
Quartz Crystal- Clear crystal used for scrying and gazing-mystically tied to the spirit and used by shamans
Emerald- Green gem thought to grant knowledge to the subconscious of the past, present and future
Lapis Lazuli- Royal blue stone with flecks of pyrite thought to contain a diety is used to increase psychic awareness