Crystal Vibes Gemini D and E Notes Quartz Crystal Singing Bowl #crystal7dp15em45 37000052
D Note Bowl
Note: D+15 Octave: 4 Frequency: 296.2 Hz
E Note Bowl
Note: E-45 Octave: 4 Frequency: 320.3 Hz
Frequency Difference: 24.1 Hz (Beta Binaural)
Both ends of the Gemini bowl are Clear Quartz Crystal, 7 inches in diameter, connected at the base by a hollow handle, allowing for easy handling, without affecting the sustain of the notes.
Rim Thickness: ~2.9 mm
For more information on the 5 Main Brainwaves, you may visit the following link: https://www.silverskyimports.com/pages/information/delta-theta-alpha-beta-gamma-frequency-brain-waves.html