This is a Gold Finish Human Organ Tuning Fork. All Forks are in attractive Velvet Pouch. This Tuning Fork is made in Aluminium metal and anodized with GOLD coating. GOLD COLOR IS COATED ON TOP OF ALUMINIUM METAL WHICH MAKES IT EVEN MORE EFFECTIVE THAN OUR SILVER FINISH FORKS The Human Organ Tuning Forks are a set of 15 forks, one for each of the major organs and essential parts of the physical body. These forks are tuned to the frequencies of healthy human tissue. The frequencies were discovered by Barbara Hero & The International Lambdoma Research Institute. She passed sound waves through a healthy organ and calculated these frequencies using the speed of sound. Frequencies are as follows : Blood - E 321.9 Hz Adrenals - B 492.8 Hz Kidneys - Eb 319.88 Hz Liver - Eb 317.83 Hz Bladder - F 352 Hz Intestines - C# 281 Hz Lungs - A 220 Hz Colon - F 176 Hz Gall Bladder - E 164.3 Hz Pancreas - C# 117.3 Hz Stomach - A 110 Hz Brain - Eb 315.8 Hz Fat Cells - C# 295.8 Hz Muscles - E 324 Hz Bone - Ab 418.3 Hz