The opal is projective and receptive. The opal contains colours as well as the qualities of every other stone. The ancients used it to promote astral projection. They can be used to recall past incarnations. Opals are worn to bring out ones inner beauty.
Fire opals are used in drawing money.
Black opals are prized by magicians and Wiccas to increase the power aroused and released from the body during magical rites.