DLT Adjustable 100X LED Illuminated Jeweler Loop Loupe, Pencil Microscope Handheld Magnifying Glass, Portable Pocket Size Magnifier for Gems, Jewelry

●Coated lenses for more comfortable viewing ●Anodized and colored, away from paint troubles, strong wear resistance ●Pen-type portable design, stylish

40X Full Metal Illuminated Jewelry Loop Magnifier

100X Jewelry Gem Handheld Pocket LED Lights miniscope Loupe

40X Full Metal Illuminated Jewelry Loop Magnifier, XYK

40X Full Metal Illuminated Jewelry Loop Magnifier

Useful Precision Instrument With Superior Optical Glass: Jeweler magnifier for jewelry authentication and provides a detector for detecting

2 Pack 40X Illuminated Jewelers Loop, JLY Pocket Folding Full Metal Jewelers Loupe Magnifying Glass with Lights for LED Currency Detecting, Jewelry

10x Foldable Pocket Magnifier Loupe with UV and LED

Portable 100x Mini Handheld Jewelry Microscope Handle Magnifier

5 Pcs Jewelers Loupe Portable Monocular Magnifier

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.

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

30X Loupe Magnifier,Adjustable Focal Length Magnifier

40X Full Metal Illuminated Jewelers Eye Loupe

●Coated lenses for more comfortable viewing ●Anodized and colored, away from paint troubles, strong wear resistance ●Pen-type portable design, stylish

DLT Adjustable 100X LED Illuminated Jeweler Loop Loupe, Pencil Microscope Handheld Magnifying Glass, Portable Pocket Size Magnifier for Gems, Jewelry

2 Pack 40X Illuminated Jewelers Loop, JLY Pocket

30X Jewelers Loupe Magnifying Glass with Light, Jewelry Magnifier Eye Loop, Metal Pocket Magnifying Glass for Jewelry, Plants, Diamonds, Gems, Coins

10x Foldable Pocket Magnifier Loupe with UV and LED