Kundalini Quartz is a naturally occurring mix of natural citrine and smoky quartz: either or both may be visible, but all stones hold the energies of both. The name Kundalini Quartz is more often applied to the natural smoky/citrine "candle / celestial quartz" formations from the Congo, but has also been adopted for these tumbled forms.
The kundalini energies (the "sleeping serpent") are coiled at rest within the region of the base chakra. Awakening or rousing the kundalini is the action of raising the consciousness up through the energy centres, firstly to the heart chakra and then to the crown chakra, resulting in heightened awareness and clarity - the state of true enlightenment. With this crystal we may ground the Divine Caduceus, which will clear the channels for the passage of the Kundalini energies when it is right and appropriate for them to rise: the smoky element grounds the silver spiral (of the Divine feminine), whilst the citrine element emplaces the golden spiral (of the Divine masculine). This results in an opening and balancing of all 7 major chakras where they join the pranic core.