Dessous-de-verre Schumann Resonance 7.83 Hz Plastic Coaster Set

This blue coaster features an image about the Schumann Resonance 7.83 Hz sound of the earth as a celestial phenomenon. The central focus is a swirling nebula of soft blues and purples, accented with trails of metallic silver stars. Within the nebula are geometric shapes resembling sound waves creating a sense of gentle, harmonic motion. The background is a tranquil blue sky with twinkling stars, conveying serene vastness and cosmic connection. The typography is the white text Schumann Resonance 7.83 Hz. The coaster is a hard plastic coaster with a cork backing. There are six plastic coasters in the coaster set.