The earliest discovered in fluorescence natural diamond stone (also known as fluorspar), ultraviolet (UV) light contains, such as sunlight), can send a non-primary color light shade of Flash.

• 荧光最早发现于天然荧石（又名氟石），在含有紫外线的光线（如日光）的照射下，能发出一种非主色光的闪色光。