108 Gemstone Mala Beads – Rock Crystal. Hindu tradition holds that the correct way to use a mala is with the right hand, with the thumb flicking one bead to the next, and with the mala draped over the middle finger. The index finger represents ego, the greatest impediment to Self-Realization, so it is considered best avoided (as with the ego) when chanting on a mala. Please note: Due to nature of the gemstone, each mala beads size and length may vary. Size of the beads is approx. 0.6 cm to 0.8 cm and length approx. 60 cm to 80 cm.