432 Hz Tuning Fork Best quality, lowest price. The original 432 Hz Verdi Tuning Fork - unweighted, is engraved "A 432". The aluminum, 2 pronged Verdi 432Hz tuning fork. weighs 2 oz. and is calibrated to the scientific pitch for Singers, Chorus, Orchestras, and by other musicians, health, wellness professionals, healing experts, educators,and sound therapists. Wrapped in plastic from the lab, it comes with a carry pouch. (Pouch color may vary). Original Verdi 432 Hz