30X Magnification 21mm Triplet Jewelers Loupe w/LED & UV Dual illumination This 30x magnification lighted loupe features 21mm Triplet Optical Glass Lens with 6 bright white LED lights to illuminate the field of view & stones being viewed. Its natural white light helps to look at inclusions, a perfect light for grading diamonds and other gems. It also have achromatic & aplanatic optical glass magnifier for better viewing result, metal body, UV light (long wave) for some stones that fluoresce under UV. Three lenses bonded together to correct spherical & chromatic aberrations eliminating color degradation and every part of the wide field of view in sharp focus for optimum chromatic performance and true color clarity. Triplet magnifiers are our best quality geology lenses LED lights & UV light are activated by separate miniature on/off switch, functions as either a LED loupe or as a UV loupe. Diamonds with flourescence will appear cloudy when viewed with the UV light on Top quality 30x 21mm Optic Lens Loupe with 6 LED light