Opal are great stone for astral projection and it helps bringing out the inner beauty of oneself, Opal is used in the meditation to recall the past incarnations. Opal are often used in drawing money and Luck.
Opal is associated with those who are born under Libra Sign.
Disclaimer
Candles,Herbs,Crystals and essential oils are solely energy work and should not be completely substituted with conventional medicines and medical methods and it is advised to consult doctor if you have serious health issues