Crystal Yantra CY-143 for reducing the negative effects and minimizing the malefic impact of Number 13 CY-143 : This Crystal Yantra is for reducing the negative effects of Number 13 on an individual - in his personal and professional life. It also minimizes the malefic energies associated with the Number 13. In most of the countries and cultures around the world, Number 13 is arguably the most contentious and ominous one. ...