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A powerful protection stone, Green Onyx absorbs and transforms negative energy, and helps to prevent the drain of personal energy. ... Use  Onyx to encourage happiness and good fortune. Black Onyx is a strength-giving stone and can provide support for self-discipline issues.

The natives belonging to the Pisces Zodiac can wear the Onyx gemstone, despite the lesser affinity of the Zodiac with the stone. Though, before opting to wear the stone, it is imperative to try it on for three days as a trial and continue with it only if the results are favorable.