Discover your next conversation starter. The glow in the dark Glowstone Glycerin Lava Patina by Cherry Glass is an innovative hammer glass pipe. Signature electroformed borosilicate glass blends organic material into a beautiful device. Freezable glycerin cools your smoke for a smoother inhale. Designed with a flat bottom, the Glowstone Glycerin stands on its own so you can keep your glass on display. Pack a powerful hit for an unforgettable experience. Made in USA.