The Olho de Boi is a stone of luck and protection. It is excellent for strengthening reasoning, inspiration, mental activity, courage and achievement. It is a stone linked to survival, it is help to ward off fear and nightmares. Increases leadership capacity and assists in professional and business success. Important note: the product shown above in the image may not be faithful to the product in question, due to the fact that the minerals have natural imperfections and different characteristics that make them unique.