Two light sources in one loupe! Use this Triplet 10X Lighted Loupe in low light environment or when extra light is desired. The ring of six LED lights surround a lens measuring 21mm providing a clear, even illumination without casting shadows or harsh reflection. The UV light is used for checking fluorescence in diamonds. The black, non-reflective housing of the loupe reduces glare and prevents color distortion. See the luster and clarity every time! Batteries included.