All Tektites are naturally formed glassy droplets associated with meteorite strikes, being heated to liquid state and then having solidified on contact with soil or water, resulting in their characteristic markings.
Despite their colour they are not grounding, but are expansive and have the capacity to open and clear the chakras whilst "grounding" one up/in to the energies of the Cosmos through enhancing "interstellar" communication and psychic sensitivity. They may also have the sense of "pulling one down" through the Earth Star chakra, but rather than then grounding one into the core of the Earth they complete a toroidal energy circuit that passes through the Earth and then out to the Cosmos, and thence back to connect again down through the upper energy centres.