Tektite Tumbled

Facilitates the opening and clearing of the lower chakras while also stimulating one's psychic and intuitive abilities. Invigorates the aura, burning away energetic debris. Aids in communicating with beings from other worlds.
Simmons/Ahsian - "The Book of Stones"

Chakras: Root, Sacral, Solar Plexus, Heart, Throat, Third Eye, Crown

Planets: Earth

Zodiacs: Aquarius, Aries, Cancer, Capricorn, Gemini, Leo, Libra, Pisces, Sagittarius, Scorpio, Taurus, Virgo

Elements: Earth, Storm

Hardness: 5.5-6.5