Terahertz Ore Firefly Glass Blue Bracelet 12mm Okinawa Ryukyu [GOLD STONE]

---------------------------------------------------------------------- Diameter 12mm (±0.5mm) 16 grains Inner diameter 15cm (±5mm) Not a luminous or luminous type. Terahertz and Hotaru Glass have collaborated! The firefly glass shining deep blue is so beautiful! ! Firefly glass is known as a very popular souvenir in Okinawa♪ It will be delivered in a case with the GOLD STONE logo. ◆Terahertz The secret behind terahertz ore lies in the energy that causes 1 trillion molecular vibrations per second. Terahertz waves (Tera/1 trillion Hertz waves) emitted from terahertz ore are electromagnetic waves that are located between "light sources such as far infrared rays" and "radio waves." The frequency of terahertz waves is between 1 trillion Hz and 100 trillion Hz, and the wavelength is between 3 μm and 1000 μm, which has the properties of both light and radio waves.