Prescription on the basis of 'lagan' -the 'birth ascendant'
In this system, the gemstone is prescribed on the basis of the sign, which is rising at the time of the birth. The system has a flaw that it does not give credence to any other astrological factor. The stones prescribed this way may not give any effect at times and may adversely affect the native. The chart shown below gives a summary of this system of prescription.