21mm Jeweler Loupe 10x Magnifier with LED and UV Light

The light is used for checking fluorescence in diamonds. Diamonds with fluorescence will appear cloudy when viewed with the light on. Fluorescence is not 'diagnostic' but, as with most tests, it eliminates some possibilities, opens other possibilities, suggests which other tests to carry out, and that's how gemologists identify stones.

DANOPLUS 10x Magnifier Jewelry Loupe LED UV 21mm Triplet Lens

Gain Express 21mm Jeweler Loupe 10x Magnifier With LED and UV Light for sale online

10X Illuminated Jewelers Loupe Magnifier with Interchangeable

This 10x magnification lighted loupe features a 21mm triplet lens and contains six bright white LED lights to illuminate the field of view & stones

GM11 Mini 10X Jeweler Loupe Magnifier + LED & UV light, 21mm lens

20x MAGNIFICATION with LED & UV Light, 21mm Lens Diameter, Triplet lens, Metal (Aluminum) body PROFESSIONAL KIT SET: includes 20x Jewelry Loupe,

20x Magnifier Jewelry Loupe LED UV 21mm Triplet Lens Optical Glass, Pocket Gem Magnifying Tool Jeweler, Stamp Philatelist, Coin Numismatic

3 Pieces Illuminated Jewelry Loop Magnifier 10X 30X

15x Magnifier Jewelry Loupe LED UV Light 21mm Achromatic Triplet Lens Optical Glass Pocket Gem Magnifying Tool Jeweler, Stamp Philatelist, Coin Numismatic : : Office Products

Eye Loupe 20x Watchmakers Inspection Jewelers Loupe Magnifier