On the flip side, a black Tulsi mala is made out from the beads of Shyama Tulsi. Sthyama Tulsi grows deeper and has purplish color in the stems. Thus, it is said to be more potent in dissipating the negative energy and also as used traditionally for strength along with protection. Devotional quality is also said to be enhanced through it. For genuine original Tulsi ki mala in Vrind... https://www.radheshyamtulsimala.com/how-to-find-original-tulsi-mala/