Highlights: Perfect for meditation, relaxation and therapy Pure and attractive crystal material Very long vibration Engraved tuning info Product Description: The Meinl Sonic Energy Solfeggio Crystal Tuning Forks are crafted from high-purity quartz crystal, offering a rich vibrational resonance ideal for meditation, relaxation, and therapeutic use. These Solfeggio frequencies are believed to promote healing and well-being for the body, mind, and soul. Known and utilized since ancient times, these frequencies were used to address both physical and psychological ailments—most notably by monks, who incorporated them into Gregorian chants, recognizing their healing effect as the vibrations connected deeply with the body. Each Solfeggio Crystal Tuning Fork comes with a protective bag and a mallet for activation. Specifications: Tuning 174 Hz ≈ F3 Diameter 0.6" / 16 mm Length 15.9" / 40.5 cm Material Gemstone (Quartz) Including Carrying bag, Crystal rod