YANGHX 100x Zoom Handheld Lighted Microscope Jewelers Magnifier Loupe # Mg10085 : Health & Household

YANGHX 100x Zoom Handheld Lighted Microscope Jewelers Magnifier Loupe # Mg10085 : Health & Household

CUTE 4 U New 100x Handheld Magnifying Glass Reading

Large Handheld Magnifying Glass 3X, Magnifier Jeweler Loupe for

Jewelers Loupe, Pocket Magnifying Glass with LED Light & Dual

Microscope Light 100X Magnifier Magnifying Glass Pen Type

GSTK-785 30X Magnification Jeweler Loupe Magnifier w/ 6 LED light

GSTK-785 30X Magnification Jeweler Loupe Magnifier w/ 6 LED light

Bright LED: With this dual LED light source, you can clearly see objects in the dark or in low light. The magnifying glass provides a detector for

40X Full Metal Illuminated Jewelry Loop Magnifier, XYK Pocket Folding Magnifying Glass Jewelers Eye Loupe with LED(LED Currency Detecting/Jewelry

Portable 100x Mini Handheld Jewelry Microscope Handle Magnifier

Jewelry Magnifier, 100X Zoom Microscope Double Tube

CUTE 4 U New 100x Handheld Magnifying Glass Reading

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

Handheld Hand Held LED Lighted 60X-100X Magnification

JARLINK 2 Pack Jewelers Loupe, 30X 60X 90X Illuminated

40X Full Metal Illuminated Jewelry Loop Magnifier, XYK